2024 fiscal year
Yuya Maeda, Kentaro Shibata, Toshiki Kobayashi, Makoto Yamashita, Shuta Nakajima, Rikizo Ikuta, and Takashi Yamamoto
“Observation of anti-bunching of the fluorescence from single atom on atom array”
Quantum Innovation 2024、2024/10/21-23、
sola city Conference Center4-6, Kandasurugadai, Chiyoda-ku, Tokyo, 101-006
Shunsuke Hiraoka, Shoichi Murakami, Toshiki Kobayashi, Takashi Yamamoto, Rikizo Ikuta
”Selective frequency conversion by optical frequency tweezers” (poster, 22 October), Quantum Innovation 2024, 21-23 October 2024, sola city Conference Center, Tokyo, Japan.
Shoichi Murakami, Toshiki Kobayashi, Shigehito Miki, Hirotaka Terai, Tsuyoshi Kodama, Tsuneaki Sawaya, Akihito Otomo, Takashi Yamamoto, Rikizo Ikuta
“Quantum frequency conversion with cavity-enhanced converted mode” (poster, 12 September), Workshop for Quantum Repeaters and Networks 2024 (WQRN2024), Sep. 11 – 13, 2024, the Hotel Eden Palace au Lac, Montreux, Switzerland.
Rikizo Ikuta
“Multiplexed quantum network based on quantum frequency conversion” (poster, 12 September), Workshop for Quantum Repeaters and Networks 2024 (WQRN2024), Sep. 11 – 13, 2024, the Hotel Eden Palace au Lac, Montreux, Switzerland.
Shoichi Murakami, Toshiki Kobayashi, Shigehito Miki, Hirotaka Terai, Tsuyoshi Kodama, Tsuneaki Sawaya, Akihiko Ohtomo, Hideki Shimoi, Takashi Yamamoto, Rikizo Ikuta
“Quantum frequency conversion experiment with a PPLN waveguide resonator” (poster, 26 August), 24th Asian Quantum Information Science Conference (AQIS2024), Aug. 26 – 30, 2024, Sapporo, Japan
Toshiki Kobayashi, Yuya Maeda, Kentaro Shibata, Makoto Yamashita, Shuta Nakajima, Rikizo Ikuta, Takashi Yamamoto
“Characterizing single photon from an atom array” (virtual poster), The 28th International Conference on Atomic Physics (ICAP2024) 2024/7/14-7/19 Imperial College, London, UK
Yuya Maeda, Kentaro Shibata, Toshiki Kobayashi, Makoto Yamashita, Shuta Nakajima, Rikizo Ikuta, Takashi Yamamoto
“Characterizing single photon from an atom array via optical fiber” Young Atom Opticians Conference 2024 2024/6/30-7/5 Institut de Science et d’Ingénierie Supramoléculaires, Strasbourg, France
Shinichi Takenaka, Shoichi Murakami, Toshiki Kobayashi, Takashi Yamamoto, Rikizo Ikuta
“Polarization-insensitive quantum frequency conversion module based on Mach-Zehnder interferometer” (poster), ALPS The 13th Advanced Lasers and Photon Sources Apr. 22(Mon.)-26(Fri.), 2024 Optics & Photonics International Congress 2024 at PACIFICO Yokohama, Yokohama, Japan.
Shunsuke Hiraoka, Shoichi Murakami, Daiki Hara, Toshiki Kobayashi, Fumihiro China, Shigehito Miki, Hirotaka Terai, Tsuyoshi Kodama, Tsuneaki Sawaya, Akihiko Ohtomo, Hideki Shimoi, Rikizo Ikuta, Takashi Yamamoto
“Polarization-entangled photon pair generation using tandem type-II QPM PPLN waveguide” (poster, 25 April), 13th Advanced Lasers and Photon Sources Conference (ALPS2024), 22-26 April 2024, Pacifico Yokohama, Yokohama, Japan.
Toshiki Kobayashi, Tomoaki Arizono, Riku Arao, Shigehito Miki, Fumihiro China, Hirotaka Terai, Takashi Yamamoto, Rikizo Ikuta
“Channel selective quantum frequency conversion” (oral, 25 April), 13th Advanced Lasers and Photon Sources Conference (ALPS2024), 22-26 April 2024, Pacifico Yokohama, Yokohama, Japan.
Shoichi Murakami, Toshiki Kobayashi, Shigehito Miki, Fumihiro China, Hirotaka Terai, Takashi Yamamoto, Rikizo Ikuta
“Quantum frequency conversion by PPLN waveguide with resonant structure for the converted mode” (oral, 25 April), 13th Advanced Lasers and Photon Sources Conference (ALPS2024), 22-26 April 2024, Pacifico Yokohama, Yokohama, Japan.
2023 fiscal year
Fumiyoshi Kobayashi and Shota Nagayama,
“Erasure-tolerance protocol for the surface codes on Rydberg atomic quantum computers” (Poster, 16th, January), Quantum Information Processing 2024 Taipei (QIP2024), 13-19, January 2024, Taipei International Convention Center (TICC), Taipei
“Polarization-entangled biphoton frequency comb for DWDM technology” (Poster, 16 Nov.),
Quantum Innovation 2023, 15-17 November 2023, Tokyo Convention Hall, Tokyo, Japan
Takashi Yamamoto, “Potential tools for sensing applications from quantum-network technologies” (invited as a panelist, 23-24 Oct.),
EMERGING AND DISRUPTIVE TECHNOLOGIES TO ENHANCE DISASTER RESILIENCE, 23-24 Oct. 2023, ÇUKUROVA UNIVERSITY, Adana, Turkiye
Takashi Yamamoto, “Photonic quantum information processing in frequency domain” (invited, 29 Sep.),
Okinawa School in Physics 2023: Coherent Quantum Dynamics (CQD 2023), 26 Sep. -5 Oct. 2023, OIST, Okinawa, Japan
Takashi Yamamoto, “Quantum Cyberspace with Networked Quantum Computer” (invited, 19 July), Moonshot Goal 6 International Symposium 2023, 18-20 July 2023, Akasaka Intercity Conference, Tokyo, Japan.
Rikizo Ikuta, “Second-order duality of light and its nonclassical complementarity” (poster, 29 June), Cleo/Europe-EQEC, 26-30 June 2023, ICM center, Munich, Germany.
Toshiki Kobayashi, Tomohiro Yamazaki, Rintaro Fujimoto, Shigehito Miki, Fumihiro China, Hirotaka Terai, Rikizo Ikuta, Takashi Yamamoto, “DWDM-compatible entanglement distribution using a biphoton frequency comb” (poster, 29 June), Cleo/Europe-EQEC, 26-30 June 2023, ICM center, Munich, Germany.
Rikizo Ikuta, Masayo Yokota, Toshiki Kobayashi, Nobuyuki Imoto, Takashi Yamamoto, “Singly resonant frequency conversion for manipulation of a frequency-multiplexed single photon” (oral, 29 June), Cleo/Europe-EQEC, 26-30 June 2023, ICM center, Munich, Germany.
Shoichi Murakami, Shogo Hayashi, Toshiki Kobayashi, Fumihiro China, Shigehito Miki, Hirotaka Terai, Tsuyoshi Kodama, Tsuneaki Sawaya, Akihiko Ohtomo, Hideki Shimoi, Rikizo Ikuta, Takashi Yamamoto, “Polarization-entangled photon pair generation with a tandem type-II quasi-phase-matched PPLN waveguide” (oral, 20 April), 12th Advanced Lasers and Photon Sources Conference (ALPS2023), 18-21 April 2023, Pacifico Yokohama, Yokohama, Japan.
Rikizo Ikuta, Tomohiro Yamazaki, Rintaro Fujimoto, Toshiki Kobayashi, Shigehito Miki, Fumihito China, Hirotaka Terai, Takashi Yamamoto, “Frequency-multiplexed entanglement distribution with a massive-mode biphoton frequency comb generator” (oral, 19 April), 12th Advanced Lasers and Photon Sources Conference (ALPS2023), 18-21 April 2023, Pacifico Yokohama, Yokohama, Japan.
2022 fiscal year
Rikizo Ikuta, “Application of PPLN Waveguide Resonators to Quantum Information Processing” (Invited, 8 Feb.), 12th Annual World Congress of Nano Science & Technology, 8-10 February 2023, Hotel emisia Sappro, Sapporo, Japan.
Rikizo Ikuta, Young Researcher Panel Session in Quantum Cryptography & Communication Track (Invited, 29 Nov.), Quantum Innovation 2022, 28-30 November 2022, Riken (Online).
Takashi Yamamoto, “Generation and manipulation of photonic quantum states for quantum network” (Invited, 29 Nov.), Quantum Innovation 2022, 28-30 November 2022, Riken (Online).
Takashi Yamamoto, “Quantum network with photons” (Invited, 25 Nov.), 2022 Japan–Taiwan Advanced Quantum Technology Research and Development Workshop, 25 November 2022, Tohoku University (Hybrid).
Takashi Yamamoto, “Generation and manipulation of photonic quantum states in the frequency domain” (Invited, 25 Aug.), the 15th Asia Pacific Physics Conference (APPC15), 21 – 26 August 2022, South Korea (online).
Rikizo Ikuta, Masayo Yokota, Toshiki Kobayashi, Nobuyuki Imoto, Takashi Yamamoto, “Optical frequency conversion using a resonator that is pre-resonated only to the desired converted frequency” (oral, 5 Aug.), CLEO Pacific Rim 2022, 31 July – 5 August 2022, Convention Center, Sapporo, Japan.
2021 fiscal year
Rikizo Ikuta,
“Towards an optical-fiber-based quantum internet” (invited, 9th Mar. 2022), Symposium on Quantum Sciences – Osaka University & Universität Hamburg, 8-10 March 2022 (Online)
Takashi Yamamoto,
“Quantum Cryptography and Quantum Network” (invited, 6th Jul.), Osaka University Anniversary Lecture Series (Online)
Takashi Yamamoto,
“Quantum Cyberspace with Networked Quantum Computer” (invited, 23rd Apr.), Moonshot International Symposium for Goal 6 (Online)
2020 fiscal year
Takashi Yamamoto,
“Quantum Cryptography and Quantum Network” (invited, 23rd Mar.), 2021 ASEAN Joint Workshop (March 23rd and 24th, 2021 Online), VAST-OU Joint Campus Programme: The 4th IMS-VAST and INSD-OU Joint Workshop in collaboration with GSES-OU on Frontier Nanomaterials, “Nano Engineering Science on Spintronics and Quantum Information” (Online), USM-OU Joint Programme: The 2nd USM and OU Joint Colloquium on Nanoscience and Nanotechnology, “Nano-Catalysis & Green Chemistry and Semiconductor Devices” (Online)
Fumiyoshi Kobayashi, Kosuke Mitarai, Keisuke Fujii,
“Parent Hamiltonian as a benchmark problem for variational quantum eigensolvers” (Poster, 2nd Feb.), 24th Annual Conference on Quantum Information Processing, 1-5 February 2021, Technical University of Munich and Munich Center for Quantum Science and Technology, Germany. (a virtual conference)
Takashi Yamamoto,
“Quantum network with atoms and photons” (invited, 8th Dec.), 20th Asian Quantum Information Science Conference, 7-8 December 2020, Sydney, Australia. (a virtual conference)
Takashi Yamamoto,
“Quantum frequency comb with a quadratic nonlinear optical waveguide resonator ” (invited, 25th Aug.), SPIE Optics + Photonics 2020 Digital Forum, 24-28 August 2020, a virtual conference.
Rikizo Ikuta, Ryoya Tani, Masahiro Ishizaki, Shigehito Miki, Masahiro Yabuno, Hirotaka Terai, Nobuyuki Imoto, Takashi Yamamoto,
“1000-mode frequency multiplexed singly-resonant photon pairs” (oral, 5 Aug.),
CLEO Pacific Rim 2020, 3-5 August 2020, a virtual conference.
2019 fiscal year
Takashi Yamamoto,
“Quantum Network with atoms and photons” (invited, 4th Feb.),
International Workshop for Young Researchers on the Future of Quantum Science and Technology (FQST2020), 3-6 February 2020, National Institute of Informatics (NII), Japan
Tomohiro Yamazaki, Rikizo Ikuta, Toshiki Kobayashi, Shigehito Miki, Masahiro Yabuno, Hirotaka Terai, Nobuyuki Imoto, Takashi Yamamoto,
“Frequency Multiplexing of Polarization-Entangled Photon Pairs without External Filtering”(oral, 28 Nov.),
International Symposium for Nano Science(ISNS2019), 27-28 November 2019, Sigma Hall, Osaka Univ., Japan
Tomohiro Yamazaki, Rikizo Ikuta, Toshiki Kobayashi, Shigehito Miki, Masahiro Yabuno, Hirotaka Terai, Nobuyuki Imoto, Takashi Yamamoto,
“Frequency-multiplexed polarization-entangled photon pairs generated by cavity-enhanced spontaneous parametric down-conversion”(poster, 19 Nov.),
International School and Symposium on Nanoscale Transport and phoTonics 2019(ISNTT2019), 18-22 November, NTT Atsugi R&D Center, Japan.
Takashi Yamamoto,
“Quantum repeaters with photons” (invited, 30 Sep.),
Okinawa School in Physics 2019: Coherent Quantum Dynamics (CQD 2019), 24 Sep. -3 Oct. 2019, OIST, Okinawa, Japan
Rikizo Ikuta, Yasushi Hasegawa, Nobuyuki Matsuda, Kiyoshi Tamaki, Hoi-Kwong Lo, Takashi Yamamoto, Koji Azuma and Nobuyuki Imoto,
“Experimental time-reversed adaptive Bell measurement towards all-photonic quantum repeaters”(poster, 28 Aug.),
9th International Conference on Quantum Cryptography (QCrypt 2019), 26-30 August 2019, UQAM Coeur des Sciences Conference Centre, Montreal, Canada
Rikizo Ikuta, Yasushi Hasegawa, Nobuyuki Matsuda, Kiyoshi Tamaki, Hoi-Kwong Lo, Takashi Yamamoto, Koji Azuma and Nobuyuki Imoto,
“Experimental time-reversed adaptive Bell measurement towards all-photonic quantum repeaters”(oral, 23 Aug.),
19th Asian Quantum Information Science Conference (AQIS 2019), 19-23 August 2019, Korea Institute for Advanced Study, Seoul, Korea
Toshiki Kobayashi, Rikizo Ikuta, Tetsuo Kawakami, Shigehito Miki, Masahiro Yabuno, Taro Yamashita, Hirotaka Terai, Masato Koashi, Tetsuya Mukai, Takashi Yamamoto, Nobuyuki Imoto,
“Polarization insensitive frequency conversion for a fiber-optic communication of an atom-photon entanglement”(oral, 20 Aug.),
19th Asian Quantum Information Science Conference (AQIS 2019), 19-23 August 2019, Korea Institute for Advanced Study, Seoul, Korea
Takashi Yamamoto,
“Experimental all-photonic quantum repeaters”
(invited, 15 Aug.), SPIE Optics + Photonics 11-15 August 2019, San Diego Convention Center, San Diego, California, United States
Rikizo Ikuta, Ryoya Tani, Masahiro Ishizaki, Shigehito Miki, Masahiro Yabuno, Hirotaka Terai, Nobuyuki Imoto, Takashi Yamamoto,
“Frequency-multiplexed singly-resonant photon pairs from quadratic nonlinear optical waveguide resonator”(poster, 27 Jun.),
Cleo/Europe-EQEC, 23-27 June 2019, ICM center, Munich, Germany
T. Yamamoto (The talk was given by Sahin Kaya Ozdemir) “Optomechanical properties in a microbottle resonator” (Invited talk, 20 June), Progress In Electromagnetics Research Symposium PIERS 2019 in Roma, Italy 17 – 20 June 2019, Faculty of Engineering – University of Rome “La Sapienza”
2018 fiscal year
Rikizo Ikuta, Motoki Asano, Ryoya Tani, Takashi Yamamoto, Nobuyuki Imoto,
“Frequency comb generation in a quadratic nonlinear waveguide resonator” (oral, 5 Feb.),
SPIE Photonic West 2-7 February 2019, The Moscone Center, San Francisco, California, United States
Rikizo Ikuta, Motoki Asano, Ryoya Tani, Takashi Yamamoto, Nobuyuki Imoto,
“Frequency comb generation by a PPLN waveguide resonator” (poster),
International Workshop on Hybrid Quantum Systems, 8th January 2019, OIST, Okinawa, Japan.
Takashi Yamamoto,
“Quantum network with photons and diverse media” (invited),
International Workshop on Hybrid Quantum Systems, 8th January 2019, OIST, Okinawa, Japan.
Tomohiro Yamazaki,
“Spin-Plasmon Polariton on the Surface of Topological Insulator” (poster, 4 December),
The International Symposium for Materials Scientists(ISMSⅢ), 3-4 December 2018, Sigma Hall, Osaka University, Japan. (Best Poster Presentation Award)
Takashi Yamamoto,
“Quantum network with photons, atoms, and optomechanics” (invited, 1st October),
France-Japan Bilateral Workshop on Hybrid Quantum Systems, 1-2 October 2018, Ecole Normale Superieure, Paris, France.
Rikizo Ikuta, Toshiki Kobayashi, Tetsuo Kawakami, Shigehito Miki, Masahiro Yabuno, Taro Yamashita, Hirotaka Terai, Masato Koashi, Tetsuya Mukai, Takashi Yamamoto, Nobuyuki Imoto,
“Polarization insensitive frequency conversion for an atom-photon entanglement distribution via a telecom network” (Poster),
Hybrid Approaches to Quantum-Information Processing, 18-19 September 2018, Royal Danish Academy of Sciences and Letters, Copenhagen, Denmark
Thomas Walker, Koichiro Miyanishi, Rikizo Ikuta, Hiroki Takahashi, Samir Vartabi Kashanian, Yoshiaki Tsujimoto, Kazuhiro Hayasaka, Takashi Yamamoto, Nobuyuki Imoto, Matthias Keller,
“Long-distance single photon transmission from a trapped ion via quantum frequency conversion” (Oral),
QTech2018 (Quantum Technology International Conference 2018), 5-7 September 2018, Ecole Normale Supérieure Ulm, Paris, France
2017 fiscal year
Motoki Asano、Ryuichi Ohta、Takashi Yamamoto、Hajime Okamoto、Hiroshi Yamaguchi
“An evanescently-coupled silica microbottle and GaAs electromechanical resonator” (Oral, 13th),
Frontiers of Circuit QED and Optomechanics, 12-14 February 2018, IST Austria, Klosterneuburg, Austria
Motoki Asano、Ryuichi Ohta、Takashi Yamamoto、Hajime Okamoto、Hiroshi Yamaguchi
“An opto-electro-mechanical system based on evanescently-coupled optical microbottle and electromechanical resonator” (Oral, 9th),
International conference on challenges in quantum information science, 9-11 April 2018, Hitotubashi-Hall, Tokyo, Japan
Yuki Takeuchi and Tomoyuki Morimae,
“Verification of many-qubit states”
(poster, 15 January), 21th Annual Conference on Quantum Information Processing (QIP 2018),
13 – 19 January 2018,
Delft University of Technology, Delft, The Netherlands.
Le Bin Ho and Nobuyuki Imoto
“Continuous pointer state approach to modular-value amplification”
(Oral, 7Dec.), 3rd International Conference on Quantum Foundations,
4 – 9 December 2017,
National Institute of Technology, Patna, India.
Nobuyuki Imoto,
“Quantum communication and fundamental quantum physics”
CQT Colloquium,
2 November 2017,
CQT, NUS, Singapore.
Keisuke Suzuki,
“The theory of containerization for virtual mass localizations. I”
(Poster) Frontiers of Quantum Information Physics,
9-13 Octorber, 2017,
KITP, University of California, Santa Barbara, USA.
Le Bin Ho and Nobuyuki Imoto
“Quantum weak values and modular values with an embedding quantum simulator”
(Oral, 9Sep.), 10th Vietnam-Japan Scientific Exchenge Meeting,
9 September 2017,
Shibaura Institute of Technology, Tokyo, Japan.
Koji Azuma, Akihiro Mizutani and Hoi-Kwong Lo,
“Fundamental rate-loss trade-off for the quantum internet”
(Oral, 8Sep.), 17th Asian Quantum Information Science Conference (AQIS 2017),
4 – 9 September 2017,
National University of Singapore, Singapore.
Akihiro Mizutani, Toshihiko Sasaki, Go Kato, Yuki Takeuchi and Kiyoshi Tamaki,
“Information-theoretic security proof of differential-phase-shift quantum key distribution protocol based on complementarity”
(Poster, 20 September), 7th International Conference on Quantum Cryptography(QCrypt2017),
18-22 September 2017,
University of Cambridge,Cambridge, UK.
Y. Takeuchi, K. Fujii, T. Morimae, N. Imoto,
“Verifiable blind quantum computation with fault-tolerance”
(poster, 5 September), 17th Asian Quantum Information Science Conference (AQIS’17),
4-8 September 2017,
National University of Singapore, Kent Ridge Drive, Singapore.
N. Imoto,
“Frequency-domain single-photon/two-photon interferometry”
Quantum Optics to Quantum Technologies,
11-13 July 2017 (presented on 12),
The Royal Society, London.
Keisuke Suzuki,
“Black Hole as Localizations of a Field of Positive Characteristic”
(5-min talk & Poster) The Relativistic Quantum Information North (RQIN) 2017,
4-7 July 2017,
YITP, Kyoto University, Japan.
Y. Takeuchi, T. Morimae,
“Verification of quantum states”
(poster, 15 June), Theory of Quantum Computation, Communication and Cryptography (TQC 2017),
14 – 16 June 2017,
Universite Pierre et Marie Curie, Paris, France.
K. Miyanishi, T. Tsujimoto, R. Ikuta, T. Yamamoto, N. Imoto,
“Faithful distribution of polarization entangled photon-pairs at telecom wavelength through optical fiber”
(poster, 8 June), Interdisciplinary Symposium for Up-and-coming Material Scientists 2017 (ISUMS 2017),
8-9 June 2017 (presented on 8 June),
Osaka University Hall, Osaka, Japan.
Y. Takeuchi, K. Fujii, T. Morimae, N. Imoto,
“Pauli-measurement-only verifiable blind quantum computation”
(poster, 8 June), Interdisciplinary Symposium for Up-and-coming Material Scientists 2017 (ISUMS 2017),
8-9 June 2017 (presented on 8 June),
Osaka University Hall, Osaka, Japan.
N. Imoto,
“Frequency-qubit manipulation of photons”
(Invited talk), Advances in Foundations of Quantum Mechanics and Quantum Technologies with atoms and photons (Quantum 2017),
8-12 May, 2017 (presented on 9 May)
University of Torino, Turin, Italy.
2016 fiscal year
M. Bamba, K. Inomata, Y. Nakamura,
“Coherent Phase Transition in Superconducting Circuit”
(Oral, Invited, 6 Mar.), Light-Matter Interactions in Cavity & Circuit QED Systems in the Light of Quantum Technology – IWQD –
Mar. 6-8 2017,
NII, Tokyo, Japan
M. Bamba, K. Inomata, Y. Nakamura,
“Coherent-incoherent phase transition of virtual photons in superconducting circuit”
(Oral, Invited, 26 Jan.), Virtual photons in ultra-strongly coupled systems,
23-27 Jan. 2017,
RIKEN, Wako, Japan
Takashi Yamamoto, Motoki Asano, Sahin Kaya Ozdemir,
“Controlling group delay with passive and active microresonators”
(Oral, Invited, 31 Jan.), SPIE Photonic West
28 Jan.-2 Feb. 2017,
The Moscone Cente, San Francisco, California, United States
Koji Azuma, Akihiro Mizutani, Hoi-Kwong Lo, and Go Kato,
“Theory of the quantum internet”,
(poster, 17 Jan.), 20th Annual Conference on Quantum Information Processing (QIP 2017),
16 – 20 January 2017,
Seattle, Washington, USA.
Y. Takeuchi, K. Fujii, T. Morimae, N. Imoto
“Secure quantum cloud computing with practical verification”
(poster, 17 Jan.), 20th Annual Conference on Quantum Information Processing (QIP 2017),
16 – 20 January 2017,
Seattle, Washington, USA.
Le Bin Ho and Nobuyuki Imoto
“A general relation between modular values and weak values”, (Poster)
2nd International conference for young quantum information scientists,
2016/10/19-21, COL・LEGI MAJOR DE SANT JORDI, Barcelona, Spain
M. Bamba, K. Inomata, Y. Nakamura
“Super-radiant phase transition in superconducting circuit in thermal equilibrium”
(oral, 20 Sep.), International Workshop on Ultra-Strong Light-Matter Interactions: theory and applications to quantum information
2016/9/19-21 Sep 2016, Bilbao, Spain
Y. Takeuchi, K. Fujii, T. Morimae, N. Imoto
“Practically verifiable blind quantum computation with error tolerance”
(poster, 15 Sep.), 6th INTERNATIONAL CONFERENCE ON QUANTUM CRYPTOGRAPHY (QCrypt 2016),
12 – 16 September 2016,
the Carnegie Institution for Science, Washington, D.C., USA.
Y. Hatakeyama, A. Mizutani, N. Imoto, K. Tamaki
“Differential Phase Shift QKD Protocol with Small Number of Random Delays” (Poster, 15 September),
6th International Conference on Quantum Cryptography (QCrypt2016),
12-16 September 2016
Carnegie Institution for Science, Washington DC, USA.
A. Mizutani, N. Imoto, K. Tamaki
“Robustness of Round-Robin Differential-Phase-Shift Quantum-Key-Distribution Protocol Against Source Flaws” (Poster, 15 September),
6th International Conference on Quantum Cryptography (QCrypt2016),
12-16 September 2016
Carnegie Institution for Science, Washington DC, USA.
A. Mizutani, Y. Nagamatsu, M. Curty, H.-K. Lo, K. Azuma, R. Ikuta, T. Yamamoto, N. Imoto, K. Tamaki
“Towards Secure QKD with Testable Assumptions on Modulation Devices” (Oral, 12 September),
6th International Conference on Quantum Cryptography (QCrypt2016),
12-16 September 2016
Carnegie Institution for Science, Washington DC, USA.
Kentaro Waki, Taro Yamashita, Shin-ichiro Inoue, Shigehito Miki, Hirotaka Terai, Rikizo Ikuta, Takashi Yamamoto, Nobuyuki Imoto
“Waveguide-coupled NbTiN SSPD toward on-chip quantum waveguide circuit” (Oral, 9 September),
Applied Superconductivity Conference 2016 (ASC2016),
4-9 September, 2016
Colorado Convention Center, Denver, USA
T. Kobayashi, R. Ikuta, S. Yasui, S. Miki, T. Yamashita, H. Terai, T.
Yamamoto, M. Koashi, N. Imoto,
“Observation of frequency-domain Hong-Ou-Mandel interference”
(oral, 29 August), 16th Asian Quantum Information Science Conference
(AQIS’16), 28 August – 2 September 2016,
Academia Sinica, Taipei, Taiwan.
Yoshiaki Tsujimoto, Motoki Tanaka, Yukihiro Sugiura, Rikizo Ikuta,
Shigehito Miki, Taro Yamashita, Hirotaka Terai, Takashi Yamamoto,
Masato Koashi and Nobuyuki Imoto
“High fidelity entanglement swapping via a
time-resolved coincidence measurement” (poster, 5 July), 13th International Conference on
Quantum Communication, Measurement, and Computing (QCMC 2016),
4-8 July, 2016
National University of Singapore, Singapore.
R. Ikuta, T. Kobayashi, K. Matsuki, S. Miki, T. Yamashita, H. Terai,
T. Yamamoto, M. Koashi, T. Mukai, N. Imoto
“Wavelength Conversion of non-classical light from rubidium atoms to
the telecom band” (poster, 5 July), 13th International Conference on
Quantum Communication, Measurement, and Computing (QCMC 2016),
4-8 July, 2016
National University of Singapore, Singapore.
T. Kobayashi, R. Ikuta, S. Yasui, S. Miki, T. Yamashita, H. Terai, T. Yamamoto, M. Koashi, N. Imoto
“Experimental demonstration of frequency-domain Hong-Ou-Mandel interference” (poster, 4 July), 13th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2016),
4-8 July, 2016
National University of Singapore, Singapore.
N. Imoto
“Underlying technology in photonic quantum information processing” (Plenary Talk), ICQSA 2016 (International Conference on Quantum Science and Application), Center for Quantum Research and Applications,
May 25-27, 2016 (presented on 2016).
Eskisehir Osmangazi University, Eskisehir, Turkey.
2015 fiscal year
M. Bamba, T. Ogawa, N. Imoto
“Remaining Possibility of Super-Radiant Phase Transition by Ultra-Strong Interaction”
(poster, 29 March), 17th International Conference on Physics of Light-Matter Coupling in Nanostructures (PLMCN17),
28 – 31 March 2016,
Todaiji Temple Cultural Center, Nara, Japan.
M. Asano, Y. Takeuchi, S. K. Ozdemir, R. Ikuta, N. Imoto, L. Yang, T. Yamamoto
“Cavity-enhanced stimulated Brillouin scattering in a whispering-gallery-mode bottle resonator”
(poster, 2 December), The 4th International Workshop on Microcavities and Their Applications (WOMA2015),
1 – 4 December 2015,
Hokkaido University, Hokkaido, Japan.
M. Asano, Y. Takeuchi, W. Chen, S. K. Ozdemir, R. Ikuta, N. Imoto, L. Yang, T. Yamamoto
“Cavity optomechanics in a whispering-gallery-mode bottle resonator”
(poster, 18 November), The 2nd International Symposium on INTERACTIVE MATERIALS SCIENCE CADET PROGRAM (iSIMSC-2),
18 – 19 November 2015,
Senri Hankyu Hotel, Osaka, Japan.
Y. Takeuchi, M. Asano, S. Komori, S. K. Ozdemir, R. Ikuta, T. Yamamoto, L. Yang, N. Imoto
“Optical vortex emission from a half-bottle microstructure”
(poster, 18 November), The 2nd International Symposium on INTERACTIVE MATERIALS SCIENCE CADET PROGRAM (iSIMSC-2),
18 – 19 November 2015,
Senri Hankyu Hotel, Osaka, Japan.
Y. Takeuchi, K. Fujii, R. Ikuta, T. Yamamoto, N. Imoto
“Blind Quantum Computation over a collective-noise quantum channel”
(oral, 5 October), Workshop on secure quantum computing 2,
5 October 2015,
University of Tokyo (Hongo Campus), Tokyo, Japan.
Yuichi Nagamatsu, Akihiro Mizutani, Rikizo Ikuta, Takashi Yamamoto, Nobuyuki Imoto, and Kiyoshi Tamaki
“Security of quantum key distribution with non I.I.D. light sources”
(poster, 29 Sep.), 5th International Conference on Quantum Cryptography (QCrypt2015),
28 September – 2 October 2015,
Hitotsubashi Hall, Tokyo, Japan.
Y. Takeuchi, K. Fujii, R. Ikuta, T. Yamamoto, N. Imoto
“Blind Quantum Computation against collective noise”
(poster, 29 Sep.), 5th International Conference on Quantum Cryptography (QCrypt2015),
28 September – 2 October 2015,
Hitotsubashi Hall, Tokyo, Japan.
A. Mizutani, M. Curty, C. C. W. Lim, N. Imoto, K. Tamaki
“Finite-key security analysis of quantum key distribution with imperfect light sources”
(poster, 29 Sep.), QCrypt 2015,
28 September – 2 October 2015,
Hitotsubashi Hall, Tokyo, Japan.
M. Curty, K. Tamaki, F. Xu, A. Mizutani, C. C. W. Lim, B. Qi, H.-K. Lo
“Bridging the gap between theory and practice in quantum cryptography”
(Invited talk, 22 Sep.), SPIE Security + Defence 2015,
21 – 24 September 2015,
Centre de Congres Pierre Baudis, Toulouse, France.
T. Yamamoto
“Quantum Operations Based on Waveguide Nonlinear Optical Materials”
(Invited talk, 8 July), Progress In Electromagnetics Research Symposium PIERS 2015 in Prague,
06 – 09 July 2015,
The Top Hotel, Prague, Czech Republic.
K. Waki, T. Yamashita, S. Inoue, S. Miki, H. Terai, R. Ikuta, T. Yamamoto, N. Imoto
“Characterization of NbTiN-Based Superconducting Nanowire Single-Photon Detectors on Si Waveguide”
(poster, 6 July), 15th International Superconductive Electronics Conference (ISEC2015),
06 – 09 July 2015,
Nagoya University and Nogakudo, Nagoya, Japan.
N. Imoto
“Frequency-domain quantum manipulation of photons using PPLN”
(Invited talk, 3 July), The 7th International Workshop on Solid State Quantum Computing (IWSSQC 7),
02 – 04 July 2015,
Nanjing University, China.
T. Kobayashi, R. Ikuta, S. Yasui, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Sasaki, Z. Wang, M. Koashi, N. Imoto
“Observation of Hong-Ou-Mandel interference by using a frequency-domain beamsplitter”
(poster, 25 June), CLEO/Europe-EQEC 2015,
21-25 June 2015,
International Congress Centre (ICM), Munich, Germany.
Y. Takeuchi, M. Asano, S. K. Ozdemir, R. Ikuta, T. Yamamoto, L. Yang, N. Imoto
“Controlling the group velocities of light pulses in a fiber-coupled bottle microresonator”
(oral, 28 May), Workshop on Optical Nanofiber Applications: From Quantum to Bio Technologies (ONNA 2015),
25 – 28 May 2015,
OIST Seaside House, Okinawa, Japan.
Y. Tsujimoto, Y. Sugiura, M. Ando, D. Katsuse, R. Ikuta, T. Yamamoto, M. Koashi, N. Imoto
”Extracting an entangled photon pair from collectively decohered pairs at a telecommunication wavelength”
(oral, 20 May), The 2nd International Engineering Science Consortium meeting (IESC),
19 – 20 May 2015,
National University of Singapore, Singapore.
M. Bechu, M. Asano, M. Tame, S. K. Ozdemir, R. Ikuta, T. Yamamoto, D. O. Guney, L. Yang, M. Wegener, N. Imoto
“Quantum Entanglement Distillation Using an Optical Metamaterial”
(oral, 12 May), CLEO:2015,
10 – 15 May 2015
San Jose Convention Center, San Jose, CA, USA
2014 fiscal year
K. Yokota
“A weak-value interpretation of the Schwinger mechanism”
(Invited talk, 19 March), International Workshop on Weak Value and Weak Measurement,
19 – 20 March 2015,
Tokyo Institute of Technology, Japan.
N. Imoto
“Entanglement Web Expansion”
(Invited talk, 13 December), The 8th Asia Pacific Conference & Workshop on Quantum Information Science (APCWQIS 2014),
12 – 15 December 2014,
National Cheng Kung University, Tainan, Taiwan.
Y. Tsujimoto, Y. Sugiura, M. Tanaka, R. Ikuta, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, and N. Imoto
“Observation of a high visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement”
(poster, 17 – 18 November), The 1st international symposium on interactive materials science cadet program (iSIMSC),
16 – 19 November 2014,
Hotel Hankyu Expo Park, Osaka, Japan.
Y. Takeuchi, M. Asano, S. K. Ozdemir, R. Ikuta, T. Yamamoto, L. Yang, N. Imoto
“Observation of Slow and Fast Light in a Bottle Microresonator”
(poster, 17 – 18 November), The 1st international symposium on interactive materials science cadet program (iSIMSC),
16 – 19 November 2014,
Hotel Hankyu Expo Park, Osaka, Japan.
M. Asano, M. Bechu, M. Tame, D. O. Guney, S. K. Ozdemir, R. Ikuta, T. Yamamoto, L. Yang, M. Wegener, N. Imoto
“Demonstration of Entanglement Distillation with Photonic Metamaterial”
(poster, 17 – 18 November), The 1st international symposium on interactive materials science cadet program (iSIMSC),
16 – 19 November 2014,
Hotel Hankyu Expo Park, Osaka, Japan.
M. Asano, M. Bechu, M. Tame, D. O. Guney, S. K. Ozdemir, R. Ikuta, T. Yamamoto, L. Yang, M. Wegener, N. Imoto
“Entanglement Distillation with Photonic Metamaterial”
(poster, 4 November), 12th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2014),
01 – 09 November 2014,
University of Science and Technology of China, Hefei, China.
Y. Tsujimoto, Y. Sugiura, M. Ando, D. Katsuse, R. Ikuta, T. Yamamoto, M. Koashi, N. Imoto
“Experimental extraction of an entangled photon pair at a telecom wavelength”
(poster, 25 – 26 August), Physics of Quantum Information Processing (Satellite workshop at Osaka University of AQIS 2014 (Kyoto)),
25 – 26 August 2014,
Sigma Hall (Engineering Science Int. Bldg.), Osaka University, Japan.
T. Kobayashi, S. Yasui, R. Ikuta, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, N. Imoto
“Observation of Hong-Ou-Mandel interference by using a frequency-domain beamsplitter”
(poster, 25 – 26 August), Physics of Quantum Information Processing (Satellite workshop at Osaka University of AQIS 2014 (Kyoto)),
25 – 26 August 2014,
Sigma Hall (Engineering Science Int. Bldg.), Osaka University, Japan.
K. Waki, T. Yamashita, S. Inoue, S. Miki, H. Terai, R. Ikuta, T. Yamamoto, N. Imoto,
“Fabrication and characterization of waveguide-coupled superconducting nanowire single-photon detectors on silicon-on-insulator substrates”
(poster, 25 – 26 August), Physics of Quantum Information Processing (Satellite workshop at Osaka University of AQIS 2014 (Kyoto)),
25 – 26 August 2014,
Sigma Hall (Engineering Science Int. Bldg.), Osaka University, Japan.
A. Mizutani, K. Tamaki, R. Ikuta, T. Yamamoto, N. Imoto,
“Measurement-device-independent quantum key distribution for Scarani-Acin-Ribordy-Gisin 04 protocol”
(poster, 21 August), 14th Asian Quantum Information Science Conference (AQIS 2014),
20 – 24 August 2014,
Shirankaikan, Kyoto, Japan.
K. Waki, T. Yamashita, S. Inoue, S. Miki, H. Terai, R. Ikuta, T. Yamamoto, N. Imoto,
“Fabrication and characterization of waveguide-coupled superconducting nanowire single-photon detectors on silicon-on-insulator substrates”
(poster, 14 August),
Applied Superconductivity Conference 2014 (ASC2014),
10 – 15 August 2014,
Charlotte Convention Center, Charlotte, NC, USA.
N. Imoto
“Frequency conversion of single photons with high-fidelity quantum information preservation”
(Invited talk, 17 July), 23rd annual International Laser Physics Workshop (LPHYS’14),
14 – 18 July 2014,
Sofia, Bulgariia.
N. Imoto
“Frequency conversion – towards hybrid quantum information processing”
(Invited talk, 29 May), Advances in Foundations of Quantum Mechanics and Quantum Information with atoms and photons (Quantum 2014),
26 – 30 May, 2014,
INRIM, Turin, Italy.
N. Imoto
“Two-state formalism”
(Invited talk, 22 May), The V Jubilee KCIK Symposium,
22 – 24 May, 2014,
National Quantum Information Centre in Gdansk, Sopot, Poland.
2013 fiscal year
N. Imoto
“Quantum communication with lossy and noisy photonic channels”
(Invited talk, 16 December), Asia-Pacific Conference & Workshop onQuantum Information Science (APCWQIS2013),
15 – 18 December, 2013,
KIAS, Seoul.
N. Imoto
“Quantum Communication and Computation with Interface between Memories and Propagating
Signals”
(Invited talk, 20 October),
The 6th InternationalWorkshop on Solid State Quantum Computing (IWSSQC6),
October 19-21, 2013,
Beijing.
R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto,
M. Koashi, M. Sasaki, Z. Wang, N. Imoto,
“The HOM interference between independent telecom light pulses
frequency-down-converted by difference-frequency generation”
(oral, 29 August),
13th Asian Quantum Information Science Conference (AQIS 2013),
25 – 30 August 2013,
The Institute of Mathematical Sciences Taramani, Chennai.
N. Imoto
“Towards long-distance photonics quantum communication” (Invited talk, 21 August)
Workshop on Photonics Foundations and Applications
Institute for Molecular Science (IMS), Okazaki, Aichi, 21 August 2013
M. Asano, S. K. Ozdemir, R. Ikuta, T. Yamamoto, N. Imoto, L. Yang
“Observation of slow and fast light in a whispering gallery mode
microtoroid resonator” (poster 18 July)
The 12th Asia Pacific Physics Conference (APPC12)
2013/7/14-7/19 International Conference Hall, Makuhari Messe, Chiba, Japan
N. Imoto
“Quantum communication with lossy and noisy photonic channels”
(Invited talk, 8 July)
The International Workshop on New Science and Technologies using Entangled Photons (NSTEP)
2013/7/8-9 Osaka University, Japan
T. Kobayashi, R. Ikuta, H. Kato, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto,
M. Koashi, M. Sasaki, Z. Wang, N. Imoto
“Non-classical interference between two telecom light pulses converted by difference-frequency generation”
(poster 8 July)
The International Workshop on New Science and Technologies using Entangled Photons (NSTEP)
2013/7/8-9 Osaka University, Japan
Y. Tsujimoto, D. Katsuse, M. Ando, R. Ikuta, T. Yamamoto,
M. Koashi and N. Imoto
“Experimental extraction of entangled photon pair at a telecom
wavelength”
(poster 8 July) The International Workshop on New Science and Technologies using Entangled Photons (NSTEP)
2013/7/8-9 Osaka University, Japan
R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H. Terai, M.
Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, N. Imoto
“Observation of converted and unconverted lights preserving phase
information
via difference frequency generation by using coherent
light pulse at a single photon level”
(poster 8 July)
The International Workshop on New Science and Technologies using
Entangled Photons (NSTEP)
2013/7/8-9 Osaka University, Japan
T. Kobayashi, R. Ikuta, H. Kato, S. Miki, T. Yamashita, H. Terai, M.
Fujiwara, T. Yamamoto,
M. Koashi, M. Sasaki, Z. Wang, N. Imoto
“Non-classical Interference Between Two Telecom Photons with Wavelength
Conversion” (oral 4 July)
The 10th Conference on Lasers and Electro-Optics Pacific Rim, and The
18th OptoElectronics and Communications Conference /
Photonics in
Switching
2013
2013/6/30-7/4
Kyoto International Conference Center, Kyoto, Japan
T. Yamamoto, R. Ikuta, T. Kobayashi, H. Kato, S. Miki, T. Yamashita, H.
Terai, M. Fujiwara,
M. Koashi, M. Sasaki, Z. Wang, N. Imoto
” A photonic quantum interface for an optical fiber based quantum
communication ” (oral 17 June)
20th Central European Workshop on Quantum Optics
2013/6/16-20
KTH, Stockholm, Sweden
N. Imoto
” Two-state formalism and photonic quantum information processing” (invited
4 Apr.)
The 11th US-Japan Joint Seminar on Quantum Electronics and Laser
Spectroscopy “Ultimate Quantum Systems of Light and Matter- Control and
Applications”
2013/4/4-12
Nara Prefectural New Public Hall, Japan
R. Ikuta
” Non-classical two-photon interference between telecom light pulses
converted by difference-frequency generation” (poster 6 and 9 Apr.)
The 11th US-Japan Joint Seminar on Quantum Electronics and Laser
Spectroscopy “Ultimate Quantum Systems of Light and Matter- Control and
Applications”
2013/4/4-12
Nara Prefectural New Public Hall, Japan
T. Yamamoto
” Visible-to-Telecommunication wavelength conversion of single photons and
its applications” (invited 9 Apr.)
The 11th US-Japan Joint Seminar on Quantum Electronics and Laser
Spectroscopy “Ultimate Quantum Systems of Light and Matter- Control and
Applications”
2013/4/4-12
Nara Prefectural New Public Hall, Japan
2012 fiscal year
N. Imoto
“Photonic quantum communications over lossy and noisy channels” (invited 27 Novem.)
The 2nd OU-RuG Symposium on Particle-Nuclear and Condensed Matter Physics: New Challenges and Opportunities
2012/11/27
Osaka Univ.
T. Yamamoto, R. Ikuta, M. Koashi, N. Imoto
“A Photonic Quantum Interface for Visible-to-Telecommunication Wavelength
Conversion” (invited 26 Sep.)
IEEE PHOTONICS CONFERENCE 2012
2012/9/23-27
Hyatt Regency San Francisco Airport, USA
Hideotoshi Kumagai, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
“On the robustness of quantum communication based on decoherence-free subspace using counter propagating weak coherent laser light” (poster 8/27)
International Conference on Quantum Foundation and Technology (ICQFT 2012)
2012/8/25-8/30
Dunhuang Hotel, Dunhuang, China
Nobuyuki Imoto
“High-fidelity frequency down-conversion for nonclassical photons”(invited 10 Aug)
DYCE International Workshop,
2012/8/7-10
Kussharo Prince Hotel, Hokkaido, Japan
Kieuske Fujii, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“A distributed architecture for scalable quantum computation with realistically noisy devices”(oral 9 Aug)
DYCE International Workshop,
2012/8/7-10
Kussharo Prince Hotel, Hokkaido, Japan
R. Ikuta, H. Kato, Y. Kusaka, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, N. Imoto
“High-fidelity frequency down-conversion of visible entangled photon pairs with superconducting single-photon detectors” (poster 31 Jul)
11th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2012)
2012/7/30-8/3
Vienna University of Technology, Vienna, Austria
Keisuke Fujii and Yuuki Tokunaga
“Thresholds of surface codes on the general lattice structures suffering biased error and loss”(poster 2 Aug)
11th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2012)
2012/7/30-8/3
Vienna University of Technology, Vienna, Austria
Kieuske Fujii, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Fault-tolerant quantum computation and communication on a distributed 2D array of small local systems” (poster 30 Jul)
11th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2012)
2012/7/30-8/3
Vienna University of Technology, Vienna, Austria
Nobuyuki Imoto
“Photonic quantum communication with noisy and lossy channels” (Invited 24 May)
Quantum 2012 (Advances in Foundations of Quantum Mechanics and Quantum Information with atoms and photons)
2012/5/21-25
Turin, Italy
2011 fiscal year
Keisuke Fujii and Yuuki Tokunaga
“Error Correction Property of the Surface Codes with General Lattices”(poster 12, 13 Dec)
Quantum Information Processing 2012 (QIP2012)
2011/12/12-16
Universite du Quebec a Montreal, Montreal, Quebec, Canada
Keisuke Fujii and Tomoyuki Morimae
“Topological quantum computation on the thermal state of a nearest-neighbor two-body Hamiltonian with spin-3/2 particles”
(poster 6, 7 Dec)
Second International Conference on Quantum Error Correction(QEC11)
2011/12/5-9
University of Southern California, Los Angeles, USA
Keisuke Fujii and Yuuki Tokunaga
“Fault-Tolerant Topological One-Way Quantum Computation with Probabilistic Two-Qubit Gates”
(poster 6, 7 Dec)
Second International Conference on Quantum Error Correction(QEC11)
2011/12/5-9
University of Southern California, Los Angeles, USA
H. Kumagai, T. Yamamoto, M. Koashi, N. Imoto
“On the performance of quantum communication protocols based on decoherence-free subspaces”
International workshop on heavy fermions TOKIMEKI 2011
2011/11/23-26
SIGMA hall, Osaka University
Keisuke Fujii and Yuuki Tokunaga
“Fault-tolerant topological quantum computation with probabilistic gates” (poster 6, 8 Sep)
QIPC (Quantum Information Processing and Communication) 2011,
5-9 Sep, 2011,
ETH, Zurich, Switzerland
Keisuke Fujii and Katsuji Yamamoto
“Topological one-way quantum computation on verified logical cluster states”(poster 7, 9 Sep)
QIPC (Quantum Information Processing and Communication) 2011,
5-9 Sep, 2011,
ETH, Zurich, Switzerland
Nobuyuki Imoto,
“Beyond quantum mechanics for further understanding quantum mechanics”,
Colloquium at The Research Center for Quantum Information,
May 30 (Mon) 2011,
Institute of Physics, Slovak Academy of Sciences, Bratislava.
Nobuyuki Imoto,
“Reversing operation sequence and its application”,
Czech Technical University Colloquium,
May 24 (Tue) 2011,
Czech Technical University, Prague.
Nobuyuki Imoto,
“Photonic quantum information protection using DFS”,
Czech Technical University Colloquium,
May 19 (Thu) 2011,
Czech Technical University, Prague.
Nobuyuki Imoto,
“Aren’t we too much restricting ourselves about quantum mechanics?”,
Doppler Seminar,
May 17 (Tue) 2011,
Czech Technical University, Prague.
Nobuyuki Imoto,
“Weak measurement and its new aspect”,
Czech Technical University Colloquium,
May 10 (Tue) 2011,
Czech Technical University, Prague.
Nobuyuki Imoto,
“Photonic multipartite entanglement”,
Czech Technical University Colloquium,
May 4 (Wed) 2011,
Czech Technical University, Prague.
Rikizo Ikuta, Yoshiaki Kusaka, Tsuyoshi Kitano, Hiroshi Kato,
Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
“Wide-band quantum interface for visible-to-telecommunication
wavelength conversion” (oral, 27 August),
11th Asian Quantum Information Science Conference (AQIS 2011),
24 – 27 August 2011,
Pukyong National University, Busan, Korea.
Keisuke Fujii and Yuuki Tokunaga
“Resource-Efficient Fault-Tolerant Topological One-Way Quantum Computation with Probabilistic Two-Qubit Gates” (poster, 25, May)
6th Conference on Theory of Quantum Computation, Communication and Cryptography
24-26 May, 2011,
Complutense University of Madrid, Madrid, Spain
Rikizo Ikuta, Tsuyoshi Kitano, Yoshiaki Kusaka, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
“Frequency down-conversion of non-classical light
from visible wavelength to telecom wavelength
using difference-frequency generation” (poster),
CLEO:2011,
1-6 May 2011,
Baltimore Convention Center, Baltimore, Maryland, USA
2010 fiscal year
Masato Koashi
“Distribution and manipulation of photonic entanglement resources”(Invited)
ERATO Macroscopic Quantum Control Conference on Ultracold Atoms and Molecules (UCAM2011)
2011/1/24 -1/26
Koshiba Hall, Univ. of Tokyo, Japan
Nobuyuki Imoto
“Basic Study of Quantum Information using Photons”(Invited)
2010 Osaka University-Shanghai Jiaotong University Joint Seminar on Optical Science and Engineering,
2010/10/21
Shanghai Jiaotong University, China.
Masato Koashi
“Complementarity approach to security of quantum key distribution with practical devices updating quantum cryptgraphy and communications 2010″(Invited)
UQCC2010 Updating Quantum Cryptography and Communications
2010/10/18-20
ANA InterContinental Hotel, Tokyo, Japan
Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Boosting up quantum key distribution by learning multi-photon
statistics of practical single-photon sources” (Poster)
UQCC2010 Updating Quantum Cryptography and Communications
2010/10/18-20
ANA InterContinental Hotel, Tokyo, Japan
Toshiyuki Tashima,Tsuyoshi Kitano, Sahin Kaya Ozdemir,Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Experimental demonstration of local expansion for W states” (Poster)
International Conference on Quantum Information and Computation
2010/10/4 – 8
Wenner-Gren Center, Stockholm, Sweden
Toshiyuki Tashima,Tsuyoshi Kitano, Sahin Kaya Ozdemir,Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Experimental demonstration of local expansion for photonic W states” (Poster)
QCMC 2010 The Tenth International Conference on Quantum Communication, Measurement and Computation
2010/7/19-23
University of Queensland, Brisbane, Queensland, Australia
Rikizo Ikuta, Yohei Ono, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Efficient and robust photonic entanglement distribution using decoherence-free subspace” (Poster)
QCMC 2010 The Tenth International Conference on Quantum Communication, Measurement and Computation
2010/7/19 – 23
University of Queensland, Brisbane, Queensland, Australia
Yuya Kobayashi, Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
“Unconditional security of QKD based on three bases with threshold detectors”(Poster)
QCMC 2010 The Tenth International Conference on Quantum Communication, Measurement and Computation
2010/7/19 – 23
University of Queensland, Brisbane, Queensland, Australia
Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Boosting up quantum key distribution with knowledge of higher-order emission statistics of practical single-photon sources” (Poster)
QCMC 2010 The Tenth International Conference on Quantum Communication, Measurement and Computation
2010/7/19-23
University of Queensland, Brisbane, Queensland, Australia
N. Imoto
“Managing Multipartite Entanglement Using Photons” (Invited)
The 4th International Symposium on Information Electronics Systems/CERIES-GCOE10
July 7-8, 2010
Sendai Excel Hotel Tokyu 3F, Sendai, Japan (Presented on July 8, 2010)
N. Imoto
“Quantum Nature of Photons and Optical Information” (Invited)
The 4th Yamada Symposium on Advanced Photons and Science Evolution, 2010 (APSE 2010)
14-18 June 2010 (Presented on 14 June 2010)
JICA Osaka
Rikizo Ikuta, Yohei Ono, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Efficient and robust photonic entanglement distribution using decoherence-free subspace” (Poster)
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program)
Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
2010/5/30 – 6/4
Osaka University, Convention Center, Osaka, Japan
Takashi Yamamoto
“Protection of Photonic Quantum States via Decoherence-Free Subspaces”
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program)
Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
2010/5/30 – 6/4
Osaka University, Convention Center, Osaka, Japan
Yuya Kobayashi, Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
“Security of quantum key distribution with practical detectors” (Poster)
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program)
Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
2010/5/30 – 6/4
Osaka University, Convention Center, Osaka, Japan
Masato Koashi
“Security of Quantum Key Distribution with Practical Devices”(invited)
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program)
Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
2010/5/30 – 6/4
Osaka University, Convention Center, Osaka, Japan
N. Imoto
“Entanglement-based Photonic Information Processing” (Invited)
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program)
Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
Osaka University Convention Center
30 May – 4 June 2010 (Presented on 4 June 2010)
Toshiyuki Tashima,Tsuyoshi Kitano, Sahin Kaya Ozdemir,Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Local expansion of photonic W states using linear optics” (Poster)
International Conference on Core Research and Engineering Science of Advanced Materials (Global COE Program)
Third International Conference on Nanospintronics Design and Realization (3rd-ICNDR)
2010/5/30- 2010/6/4
Osaka University, Convention Center , Osaka, Japan
N. Imoto
“Managing multipartite entanglement”(Invited)
5th Workshop on “Advances in Foundation of Quantum Mechanics and Quantum Information with atoms and photons”
23-29 May 2010 (Presented on 25 May 2010)
INRIM, Turin, Italy.
Yuuki Tokunaga, Satoru Okamoto, Rikizo Ikuta, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Complete Process Tomography of Photonic One-Way Quantum Computing” (Poster)
2010 International Symposium on Physics of Quantum Technology (2010 ISPQT)
2010/4/6-9
Hitotsubashi-Memorial Hall, Tokyo, Japan
Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Quantum Computing”
Nanospintronics Design and Realization, 3rd-ICNDR
2010/4/6-9
Hitotsubashi-Memorial Hall, Tokyo, Japan
Tsuyoshi Kitano, Toshiyuki Tashima, Sahin Kaya Ozdemir,Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Local expansion of photonic W states using linear optics” (Poster)
2010 International Symposium on Physics of Quantum Technology (2010 ISPQT)
2010/4/6-9
Hitotsubashi-Memorial Hall, Tokyo, Japan
Masato Koashi
“Understanding security of quantum key distribution via complementarity”(Invited)
2010 International Symposium on Physics of Quantum Technology (2010 ISPQT)
2010/04/06-09 (Presented on 9 April 2010)
Hitotsubashi-Memorial Hall, Tokyo, Japan
Yuya Kobayashi, Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
“Security of quantum key distribution with threshold detectors based on three bases” (Poster)
2010 International Symposium on Physics of Quantum Technology (2010 ISPQT)
2010/04/06-09
Hitotsubashi-Memorial Hall, Tokyo, Japan
2009 fiscal year
Kazuhiro Yokota
“Direct observation of Hardy’s paradox by joint weak measurement” (invited)
ONR – Entanglement Beyond the Optical Regime
2010/2/8-12
Doubletree Hotel, Orange, CA, USA
N. Imoto
“Sending Quantum Information into the Past by Measurement” (invited)
Naval Research Meeting “Entanglement Beyond the Optical Regime”
7-12 February 2010
Doubletree Hotel, Orange, Anaheim CA
N. Imoto
“Measurement and information — Let’s look inside the interferometer while it’s working —” (invited)
Waseda Meeting on “Quantum Technologies: Information and Communication”
December 9-11, 2009
Waseda University, Tokyo, Japan
T. Seki, H. Shibata, H. Takesue, Y. Tokura, N. Imoto
“Comparison of timing jitter between NbN superconducting single-photon detector and avalanche photodiode,” (Poster)
22nd International Symposium on Superconductivity
2009/11/2-4
Tsukuba International Congress Center
N. Imoto
“Today’s art of photonic qubits” (invited)
Colloquium at Digital Materials Laboratory, Frontier Research System, RIKEN
2009/9/18
RIKEN, Saitama, Japan
Y. Kobayashi, Y. Adachi, T. Yamamoto, M. Koashi, and N. Imoto
“Security of QKD with practical devices based on three bases,”(poster)
5th Handai Nanoscience and Nanotechnology International Symposium
2009/9/1-9/3
Osaka University, Japan.
Koji Azuma, Naoya Sota, Ryo Namiki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
“Optimal entanglement generation in hybrid quantum repeaters,” (Poster)
Conference on Quantum Information & Quantum Control III ,
2009/8/25,
Fields Institude (Canada).
T. Tashima, T. Wakatsuki, S. K. Ozdemir, T. Yamamoto, M. Koashi, N. Imoto
“Local transformation of two EPR photon pairs into a three-photon W state using a polarization dependent beamsplitter”
QuantumComm 2009
International Conference on Quantum Communication and Quantum Networking
26-30 October 2009
Grand Hotel Moon Valley, Vico Equense, Sorrento peninsula, Naples, Italy.
Yuuki Tokunaga, Satoru Okamoto, Rikizo Ikuta, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto,
“Full process characterization of experimental one-way quantum computing” (poster)
QIPC2009 International Conference on Quantum Information Processing and Communication,
2009/9/21-25
Rome, Italy
Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto,
“Passive-decoy-state quantum cryptography with partly characterized sources,” (poster)
QIPC2009 International Conference on Quantum Information Processing and Communication,
2009/9/21-25
Rome, Italy
T. Yamamoto, K. Hayashi, S. K. Ozdemir, M. Koashi, N. Imoto
“DFS-based entanglement distribution through an optical fiber” (poster)
QIPC 2009 International Conference on Quantum Information Processing and Communication
2009/9/21-25
Rome, Italy
Rikizo Ikuta, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Efficiency improvement of local expansion of W states using linear optics,”(poster)
5th Handai Nanoscience and Nanotechnology International Symposium
2009/9/1-3
Osaka University, Japan.
Kazuhiro Yokota, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Direct observation of Hardy’s paradox by joint weak measurement with an entangled photon pair,”(poster)
The 3rd Conference on Quantum Information and Quantum Control (CQIQCIII)
2009/8/24-27
Fields Institute, Toronto, Canada
Yuuki Tokunaga, Satoru Okamoto, Rikizo Ikuta, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Complete process tomography of experimental one-way quantum computation”
The 3rd Conference on Quantum Information and Quantum Control (CQIQCIII)
2009/8/24-27
Fields Institute, Toronto, Canada.
Rikizo Ikuta, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Local expansion of W states using linear optics,”(poster)
The 3rd Conference on Quantum Information and Quantum Control (CQIQCIII)
2009/8/24-27
Fields Institute, Toronto, Canada.
M. Koashi,
“Complementarity and and security of quantum key distribution,”(invited)
The 3rd Conference on Quantum Information and Quantum Control (CQIQCIII)
2009/8/24-27
Fields Institute, Toronto, Canada.
Nobuyuki Imoto, K. Yokota, M. Koashi, and T. Yamamoto,
“Experimental verification of anomalous weak value in an optical
interferometer” (invited),
Colloquium at Max Planck Institute for Photonics,
2009/7/6,
Max Planck Institute for Photonics, Erlangen, Germany.
Toshiyuki Tashima, Tetsurho Wakatsuki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Preparation of a three-photon W state from two EPR photon pairs by LOCC”
CLEO/Europe-EQEC Conference 2009
14-19 June 2009
International Congress Centre (ICM Munich, Germany
Nobuyuki Imoto, K. Yokota, M. Koashi, and T. Yamamoto,
“Backaction control in quantum measurement and anomalous weak value in an
interferometer” (invited),
6th Central European Quantum Information Processing Workshop,
2009/6/2
Jindrichuv Hradec, Czech Republic.
M. Koashi
“Quantitative relations among different aspects of quantum
correlations,”(invited)
The 4th Workshop on Theory of Quantum Computation, Communication, and
Cryptography (TQC 2009)
2009/5/11-13
Institute for Quantum Computing, University of Waterloo, Canada
N. Imoto,
“A brief review on Quantum Information/ Communication” (invited)
Stockholm University Colloquium
2009/4/27
Stockholm University.
2008 fiscal year
Masato Koashi
“Quantum nonlocality without entanglement in a pair of qubits,” (invited)
DEX-SMI Workshop on Quantum Statistical Inference
2009/3/2-4
National Institute of Informatics (NII), Tokyo, Japan
Masato Koashi
“Entanglement, monogamy, and complementarity,” (invited)
UK-Japan Workshop on Quantum Information Workshop
2009/01/22-23
at the New Hall, the British Embassy Tokyo, Japan
Nobuyuki Imoto
“Multiparty-entanglement quantum information processing,” (invited)
UK-Japan Workshop on Quantum Information Workshop
2009/01/22-23
at the New Hall, the British Embassy Tokyo, Japan
Koji Azuma, Masato Koashi, Nobuyuki Imoto
“Accessing genuinely quantum information without causing disturbance” (poster)
QIP 2009 The Twelfth Workshop on Quantum Information Processing
2009/01/12-16
Santa Fe, New Mexico, USA
Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Passive-decoy quantum key distribution with pseudo-single-photon sources” (poster)
QIP 2009 The Twelfth Workshop on Quantum Information Processing
2009/01/12-16
Santa Fe, New Mexico, USA
N. Imoto
“Photonic quantum communication and quantum information processing” (invited)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
N. Imoto
“-Novel quantum information processing with photons- Team – Latest activity of Osaka University Group ” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
Y. Tokunaga, S. Kuwashiro, T. Yamamoto, M. Koashi, N. Imoto
“Experimental high-fidelity four-photon cluster state and one-way quantum computing over classical bounds” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
F. Ozaydin, S. K. Ozdemir, N. Imoto
“Quantum Communication with More Than Two Zero-Capacity Channels of Different Classes” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
S. K. Ozdemir, M. S. Tame, M. Koashi, N. Imoto, M. S. Kim
“Toffoli gate constructed using weighted graph states” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
T. Tashima, T. Wakatsuki, S. K. Ozdemir, T. Yamamoto, M. Koashi, N. Imoto
“Preparation of a three-photon W-state from two EPR photon pairs by LOCC” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
K. Yokota, T. Yamamoto, M. Koashi, N. Imoto
“Weak measurement with entangled photons” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
K. Azuma, M. Koashi, N. Imoto
“Quantum catalysis of information” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
T. Yamamoto, K. Hayashi, S. K. Ozdemir, M. Koashi, N. Imoto
“Photonic entanglement distribution via decoherence-free subspace” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
Y. Adachi, T. Yamamoto, M. Koashi, N. Imoto
“Passive decoy-state quantum key distribution with pseudo-single-photon sources” (poster)
International Symposium on Physics of Quantum Technology (ISPQT)
2008/11/25-28
Nara Prefectural New Public Hall, Japan
N. Imoto
“Photonic quantum information processing” (Invited)
Stuttgart University Colloquium
2008/11/21
Stuttgart University
N. Imoto
“Multipartite-entanglement quantum information processing” (Invited)
Stockholm University Colloquium
2008/11/19
Stockholm University
Koji Azuma
“Quantum catalysis of information and its implications” (invited)
GSIS workshop on quantum information theory
2008/11/7
Tohoku University, Japan
M. Koashi,
“Quantum Cryptography and basic properties of quantum mechanics,”(invited)
Japanese-Germany Frontiers of Science Symposium (JGFoS2008)
2008/10/31-11/2
Atrium Hotel Mainz, Germany.
S. K. Ozdemir, T. Tashima, T. Yamamoto, M. Koashi, N. Imoto
“Simple optical gates for W-state preparation and manipulation using linear optics”
Quantum Optics IV
2008/10/13-17
Jurere Beach Village Hotel, Florianopolis, Brazil.
T. Yamamoto, K. Hayashi, S. K. Ozdemir, M. Koashi, N. Imoto
“Robust photonic entanglement distribution via decoherence-free subspace(DFS)”
Quantum Optics IV
2008/10/13-17
Jurere Beach Village Hotel, Florianopolis, Brazil.
Rie Mitani, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Preparation of Squeezed Superposition States by Conditioning with Homodyne Detection” (poster)
4th Handai Nanoscience and Nanotechnology International Symposium
2008/9/29-10/1
Osaka University, Japan
Toshiyuki Tashima, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
“Local expansion of photonic W state using a polarization dependent beamsplitter” (poster)
4th Handai Nanoscience and Nanotechnology International Symposium
2008/9/29-10/1
Osaka University, Japan
N. Imoto, M. Koashi, T. Yamamoto, S. K. Ozdemir, and Y. Tokunaga
“Photonic quantum information processing,”（invited)
The First Japanese-Polish Workshop on Quantum Entanglement and Quantum Computing
2008/9/26
Adam Mickiewicz University, Poland
N. Imoto, M. Koashi, T. Yamamoto, S. K. Ozdemir, and Y. Tokunaga
“Manipulating multipartite entanglement in photonic quantum information processing” (invited)
XII International Conference on Quantum Optics and Quantum Information (ICQIO’2008)
2008/9/20
Reval Hotel Lietuva, Vilnius, Lithuania
N. Imoto, S. K. Ozdemir, M. Koashi, T. Yamamoto, and Y. Tokunaga
“Photonic implementation of quantum information processing” (invited)
Colloquium at Washington University
2008/9/16
St. Louis, USA
Masato Koashi
“On the irreversiblity of measurements of correlations,” (invited)
International Workshop on Statistical-Mechanical Informatics 2008 (IW-SMI2008)
2008/9/14-17
Sendai International Center, Japan
Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Passive decoy-state quantum cryptography with pseudo-single-photon sources”
8th Asian Conference on Quantum Information Science (AQIS’08)
2008/08/25-31
KIAS, Seoul, Korea
T. Tashima, T. Wakatsuki, S. K. Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto
“Local transformation of two EPR photon pairs into a three-photon W state” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
R. Namiki, M. Koashi, N. Imoto
“Fidelity criterion for quantum-domain transmission and storage of coherent
states beyond unit-gain constraint” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
K. Azuma, M. Koashi, N. Imoto
“Quantum catalysis of information” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
M. Koashi, Y. Adachi, T. Yamamoto, N. Imoto
“Security of entanglement-based quantum key distribution with practical detectors” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
T. Yamamoto, K. Hayashi, S. K. Ozdemir, M. Koashi, N. Imoto
“Robust entanglement distribution via decoherence-free subspace” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
S. K. Ozdemir, T. Yamamoto, T. Tashima, M. Koashi, and N. Imoto
“Simple optical gates for the preparation and fusion of W-states” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
Y. Tokunaga, S. Kuwashiro, T. Yamamoto, M. Koashi, N. Imoto
“Process characterization of optical cluster state quantum computing” (poster)
QCMC 2008
2008/8/19-24
University of Calgary, Canada
Yuuki Tokunaga, Shin Kuwashiro, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Process Characterization of Experimental Photonic One-Way Quantum Computing,”
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference
(CLEO/QELS 2008)
2008/5/4-5/9
San Jose McEnery Convention Center, San Jose
2007 fiscal year
Fatih Ozaydin
“On Landauer’s Principle,”
2008/3/13
School of Computer Science, McGill University, Montreal, Canada
Koji Azuma, Masato Koashi, and Nobuyuki Imoto
“Quantum catalysis of information,”
2008 APS March Meeting
2008/3/10-3/14
Morial Convention Center, New Orleans, Louisiana, USA
Nobuyuki Imoto, Masato Koashi, Takashi Yamamoto, Sahin Kaya Ozdemir, Ryo Namiki and Yuuki Tokunaga
“Implementation of basic quantum information processing,”（invited)
CQT Colloquium
2008/2/28
National University of Singapore, Singapore
Yoritoshi Adachi
“Efficient quantum key distribution with parametric down-conversion source,”
2008/2/15
3rd Floor Library, Fields Institute, 222 College Street, Toronto
Ryo Namiki
“Inseparability of quantum channel,” (invited)
GSIS & DEX-SMI Workshop on Quantum statistical inFerence and entanglement
2008/2/11-2/12
Tohoku University, Sendai, Japan
Toshiyuki Tashima Sahin Kaya Ozdemir Takashi Yamamoto Masato Koashi and Nobuyuki Imoto
“An elementary optical gate for expanding symmetrically shared entanglement,”
TQC 2008
2008/1/30-2/1
Koshiba-hall, The University of Tokyo, Japan
Sahin Kaya Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto
“Ancilla assisted decoherence suppression for photonic qubits,”（invited)
Workshop on Entanglement and Quantum Decoherence (EQD) at 2008 OSA
2008/1/28-30
Winter Optics and Photonics Congress, Nara, Japan
Masato Koashi
“Quantum nonlocality without entanglement’ in a pair of qubits,”（invited)
Workshop on Entanglement and Quantum Decoherence (EQD)
2008/1/28-30
Nara-Ken New Public Hall, Nara, Japan
Nobuyuki Imoto, Masato Koashi, Takashi Yamamoto, Sahin Kaya Ozdemir, Ryo Namiki and Yuuki Tokunaga
“Photonic Quantum Information Processing,” (invited)
2nd Int. Workshop on Materials Scienced and Nano-Engineering
2007/12/1-5
Awaji Yumebutai Int. Conf. Center, Japan
Yuuki Tokunaga, Shin Kuwashiro, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Experimental photonic cluster state quantum computation over classical bounds,”
The QIPC 2007 International Conference on Quantum Information Processing and Communication
2007/10/15-19
Barcelona, Spain
Y. Adachi, T. Yamamoto, M. Koashi, and N. Imoto
“Simple and efficient quantum key distribution using parametric down-conversion,”
The QIPC 2007 International Conference on Quantum Information Processing and Communication
2007/10/15-19
Barcelona, Spain
Sahin Kaya Ozdemir
“Photonic qubits: present status and challenges,”
Handai Nano Symposium
2007/9/26-28
Osaka University, Osaka, Japan
Ryo Namiki, Masato Koashi, and Nobuyuki Imoto
“Verification of quantum-domain process using two non-orthogonal states,”
Handai Nano Symposium
2007/9/26-28
Osaka University, Osaka, Japan
T. Tashima, S. K. Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto
“An optical gate for seeding large scale polarization entangled W-state,”
Handai Nano Symposium
2007/9/26-28
Osaka University, Osaka, Japan
Koji Azuma, Masato Koashi, Hosho Katsura, and Nobuyuki Imoto
“Quantum cloning with nonlocal assistance: Complement of Jozsa’s stronger no-cloning theorem,”
Handai Nano Symposium (Poster)
2007/9/26-28
Osaka University, Osaka, Japan
Y. Adachi, T. Yamamoto, M. Koashi, and N. Imoto
“Simple and efficient quantum key distribution with parametric down-conversion,”
Handai Nano Symposium
2007/09/26-28
Osaka University, Osaka, Japan
S. Shinohara, R. Mitani, S.K. Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto
“Homodyne tomography of non-Gaussian states of light,”
Handai Nano Symposium
2007/9/26-28
Osaka University, Osaka, Japan
Masato Koashi
“Quantum cryptography and quantification of quantum correlations,” (invited)
International Workshop on Statistical Mechanical Informatics 2007 (IW-SMI2007)
2007/9/16-19
Paruru Plaza Kyoto, Kyoto, Japan
Masato Koashi
“Complementarity, distillable key, and distillable entanglement,” (invited)
Asian Conference on Quantum Information Science (AQIS 2007)
2007/9/3-6
Shiran Kaikan, Kyoto, Japan
Ryo Namiki, Masato Koashi, and Nobuyuki Imoto
“Verification of quantum-domain process using two non-orthogonal states,”
Asian Conference on Quantum Information Science (AQIS 2007)
2007/9/3-6
Shiran Kaikan, Kyoto, Japan
Yuuki Tokunaga, Shin Kuwashiro, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
“Generation of high-fidelity four-photon cluster state and quantum-domain demonstration of one-way quantum computing,”
Asian Conference on Quantum Information Science (AQIS 2007)
2007/9/3-6
Shiran Kaikan, Kyoto, Japan
Koji Azuma, Masato Koashi, Hosho Katsura, and Nobuyuki Imoto
“Quantum cloning with nonlocal assistance: Complement of Jozsa’s stronger no-cloning theorem,”
Asian Conference on Quantum Information Science (AQIS 2007)
2007/9/3-6
Shiran Kaikan, Kyoto, Japan
N. Imoto, M. Koashi, T. Yamamoto, S. K. Ozdemir, R. Namiki, and Y. Tokunaga
“Entanglement manipulation,”
PAQ07
2007/9/2-5
Royal Society, London
N. Imoto, M. Koashi, T. Yamamoto, S. K. Ozdemir, R. Namiki, and Y. Tokunaga
“Quantum Information Processing using Photons,” (Invited)
CLEO/Pacific Rim 2007
2007/8/26-31
COEX, Seoul, Korea
S. K. Ozdemir
“Playing games in quantum mechanical settings: Features of quantum games,” (Invited)
Summer School on Mathematical Aspects of Quant. Comp
2007/8/27-29
Kinki University, Osaka, Japan
Masato Koashi
“Security of QKD and complementarity,” (invited)
Theory and Realisation of Practical Quantum Key Distribution
2007/6/11-14
University of Waterloo, Canada
Y. Tokunaga, S. Kuwashiro, T. Yamamoto, M. Koashi, and N. Imoto
“Simple Experimental Generation of a Four-Photon Cluster State
and Distinguishing Classes of Genuine Four-Qubit Entanglement Using Witness Operators,”
Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference
(CLEO/QELS ’07)
2007/5/6-11
Baltimore Convention Center, USA.
2006 fiscal year
Koji Azuma, Masato Koashi, and Nobuyuki Imoto
“What kind of assistance enables quantum cloning?”
2007 APS March Meeting
2007/3/5-3/9
Colorado Convention Center, Denver, Colorado, USA
S. K. Ozdemir
“Measurement of Qubits in Photonic and NMR Systems,”
Int. Conf. on Nanoelectronics, Nanostructures and Carrier Interactions (NNCI2007)
2007/2/21-2/23
NTT, Atsugi, Japan
S. K. Ozdemir, A. Miranowicz, T. Ota, G. Yusa, N. Imoto, Y. Hirayama
“NMR Quantum State Tomography Based on Longitudinal Magnetization Measurement,” (poster)
Int. Conf. on Nanoelectronics, Nanostructures and Carrier Interactions (NNCI2007)
2007/2/21-2/23
NTT, Atsugi, Japan
S. Shinohara, S. K. Ozdemir, T. Yamamoto, M. Koashi, N. Imoto
“Quantum State Tomography of Phase and Amplitude Randomized Coherent States,” (poster)
Int. Conf. on Nanoelectronics, Nanostructures and Carrier Interactions (NNCI2007)
2007/2/21-2/23
NTT, Atsugi, Japan
N. Imoto
“Quantum information processing research for near/middle future”(Invited)
Nara Advanced Interdisciplinary Workshop on Quantum Information Science (NAIST WS)
2007/1/25-1/26
Nara Institute of Science and Technology, Nara, Japan
Nobuyuki Imoto (Invited talk)
The 8th International Conference on Quantum Communication,
Measurement and Computing (QCMC 2006)
2006/11/28-12/3
Tsukuba International Congress Center, Tsukuba, Japan.
Masato Koashi
“Efficient quantum key distribution with practical sources and detectors”
The 8th International Conference on Quantum Communication,
Measurement and Computing (QCMC 2006)
2006/11/28-12/3
Tsukuba International Congress Center, Tsukuba, Japan.
Sahin Kaya Oezdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Embedding classical watermark on qubit-strings using error correctioncoding: adversary detection and tamper assessment”
The 8th International Conference on Quantum Communication,
Measurement and Computing (QCMC 2006)
2006/11/28-12/3
Tsukuba International Congress Center, Tsukuba, Japan.
Ryo Namiki, Sahin Kaya Oezdemir, Nobuyuki Imoto
“Entanglement distillation and continuous-variable quantum key distribution using postselection”
The 8th International Conference on Quantum Communication,
Measurement and Computing (QCMC 2006)
2006/11/28-12/3
Tsukuba International Congress Center, Tsukuba, Japan.
Yuuki Tokunaga, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
“Witness operators for discriminating classes of genuine multipartite entanglement”
The 8th International Conference on Quantum Communication,
Measurement and Computing (QCMC 2006)
2006/11/28-12/3
Tsukuba International Congress Center, Tsukuba, Japan.
Nobuyuki Imoto
“Quantum information processing with linear optics” (Invited)
The 10th US-Japan Joint Seminar
Fundamental Issues and Applications of Ultracold Atoms and Molecules
2006/8/25
Beaver Run Hotel and Conference Center, Breckenridge, CO, USA
Masato Koashi
“Unconditional security of practical quantum key distribution”
The 10th US-Japan Joint Seminar
Fundamental Issues and Applications of Ultracold Atoms and Molecules
2006/8/24
Beaver Run Hotel and Conference Center, Breckenridge, CO, USA
T. Yamamoto, R. Nagase, J. Shimamura, S. K. Ozdemir, M. Koashi, N. Imoto
“Faithful transmission scheme for unknown photonic qubit against correlated noise”
Conference on Quantum Information and Quantum Control II (CQIQCⅡ)
2006/8/9
The Fields Institute, Toronto, Canada
S. K. Ozdemir, A. Miranowicz, M. Koashi, and N. Imoto
“Projection synthesis in multiport interferometer for selective manipulation of an optical field in the Fock-state space”
Conference on Quantum Information and Quantum Control II (CQIQCⅡ)
2006/8/9
The Fields Institute, Toronto, Canada
2005 fiscal year
K. Azuma, J. Shimamura, M. Koashi, N. Imoto
“Probabilistic cloning with supplementary information”
Workshop on Quantum Information Theory and Quantum Statistical Inference
2005/11/17
The University of Tokyo
Y. Tokunaga, T. Yamamoto, M. Koashi, N. Imoto
“Entanglement detection of four-qubit cluster states with local measurements”
Workshop on Quantum Information Theory and Quantum Statistical Inference
2005/11/17
The University of Tokyo
M. Koashi
“Unconditional security of QKD and uncertainty principle”(invited)
Workshop on Quantum Information Theory and Quantum Statistical Inference
2005/11/17
The University of Tokyo
N. Imoto
“Quantum Information Processing in view of Optics and Material Physics”
Osaka Univ. Asia Pacific- Vietnam National University
2005/9/28
Honoi Forum International Convention Center, Hanoi, Vietnam
K. Azuma, J. Shimamura, M. Koashi, and N. Imoto
“Probabilistic cloning with supplementary information” (poster)
EQIS 2005
2005/8/29
The National Museum of Emerging Science and Innovation, Tokyo, Japan
Y. Tokunaga, T. Yamamoto, M. Koashi, N. Imoto
“Entangnlement witnesses of four-qubit cluster states with local measurements”
EQIS 2005
2005/8/29
The National Museum of Emerging Science and Innovation, Tokyo, Japan
K. Azuma, J. Shimamura, M. Koashi, and N. Imoto
“Probabilistic cloning with supplementary information” (poster)
IQEC and CLEO-PR2005
2005/7/15
Toshi Center Kaikan, Tokyo, Japan
R. Namiki Y. Kawamoto, and T. Hirano
“Efficient Phase-Encoding Schemes for Quantum Cryptography Using Balanced
Homodyne Detection and Postselection”
IQEC and CLEO-PR2005
2005/7/15
Toshi Center Kaikan, Tokyo, Japan
M. Koashi
“Recent Progress on the Unconditional Security Proof for Quantum Key Distrubution Protocols”
(Invited)IQEC and CLEO-PR2005
2005/7/15
Toshi Center Kaikan, Tokyo, Japan
T. Yamamoto, J. Shimamura, R. Nagase, S. K. Ozdemir, M. Koashi, and N. Imoto
“A Distribution Scheme for Qubit Over Collective-Noise Channel”
IQEC and CLEO-PR2005
2005/7/14
Toshi Center Kaikan, Tokyo, Japan
S. K. Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto
“Embedding Watermark in Qubit Strings Using Error Correction Coding”
IQEC and CLEO-PR2005
2005/7/14
Toshi Center Kaikan, Tokyo, Japan
S. K. Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto
“Tamper assesment in qubit-string watermarking based on quantum error correction coding”
Central European Workshop on Quantum Optics 2005
2005/6/6
Bilkent Univ. Ankara, Turkey
M. Koashi
“Unconditional security of quantum key distribution and the uncertainty principle”
Central European Workshop on Quantum Optics 2005
2005/6/6
Bilkent Univ. Ankara, Turkey
N. Imoto (invited)
“Entanglement Manipulation with Linear Optics”
CLEO/QELS 2005
2005/5/23
Baltimore Convention Centeｒ
2004 fiscal year
N. Imoto
“Development of photonic quantum-information-processing functions”
Int. Conf. on Nanoelectronics, Nanostructures and Carrier Interactions (NNCI 2005)
2005/1/30-2/2
Atsugi, Kanagawa, Japan
M. Koashi
“Security of quantum key distribution with strong phase-reference pulse”(Invited)
The first Asia-Pacific Conference on Quantum Information Science,
2004/12/12
Tainan, Taiwan
T. Yamamoto, J. Shimamura, S. K. Ozdemir, M. Koashi, and N. Imoto:
“Robust distribution of a qubit over collective-noise channel”
International Workshop on “Materials Science and Nano-Engineering (Poster)
2004/12/11-14
Osaka,Japan
N. Imoto
“Sending entangled photons: noisy-channel experiments and beyond QKD”
(Invited)1st Asia-Pacific Conference on Quantum Information Science
2004/12/9-14
National Cheng Kung University, Tainan, Taiwan
N.Imoto
“Useful linear and nonlinear optics in quantum information processing”
(Invited)Photonics ASIA 2004
2004/11/10
Beijing, China
M.Koashi
“Unconditional security of phase-coded quantum key distribution
with strong reference pulse”
(Invited) Photonics ASIA 2004
2004/11/10
Beijing, China
J. Shimamura, S.K. Ozdemir, F. Morikoshi, and N.Imoto
“Entanglement and reproducibility of classical games in quantum settings”
ERATO conference on Quantum Information Science(EQIS’04)
2004/9/1-5
Tokyo, Japan
M.Koashi
“Unconditionally secure QKD with strong phase-reference pulse”
EQIS2004
2004/9/3
Tokyo, Japan
N.Imoto
“Quantum information processing with realistic linear and nonlinear optics”
(Invited) Nonlinear Optics : OSA Tropical Meeting on Nonlinear Optics:
“Materials, Fundamentals and Applications” (NLO 2004)
2004/8/2
Waikoloa, Hawaii
N.Imoto
“Mirrors in time domain” (Invited)
The Seventh International Conference on Quantum Communication,Measurement and Computing
2004/7/28
Glasgow, UK
Y.Tokunaga, T.Yamamoto, M.Koashi, and N.Imoto
“A four-photon entanglement for linear optical quantum information processing”
The Seventh International Conference on Quantum Communication,
Measurement and Computing, Glasgow, UK,.AIP conference proceedings series
Vol.734, pp.350-353
2004/7/26
Y.Tokunaga, T.Yamamoto, M.Koashi, and N.Imoto:
“A scheme of teleportation-based CNOT with linear optics,”
Quantum Information and Quantum Control Conference,
2004/7/19
Toronto, Canada,