=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=
Papers in Reviewed Journals
=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=

2017 fiscal year

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Yoshiaki Tsujimoto, Yukihiro Sugiura, Motoki Tanaka, Rikizo Ikuta, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki, and Nobuyuki Imoto,
"High visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement"
Optics Express 25, 12069-12080 (2017).

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Toshiki Kobayashi, Daisuke Yamazaki, Kenichiro Matsuki, Rikizo Ikuta, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
"Mach-Zehnder interferometer using frequency-domain beamsplitter"
Optics Express 25, 12052-12060 (2017).

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Yuki Hatakeyama, Akihiro Mizutani, Go Kato, Nobuyuki Imoto, and Kiyoshi Tamaki,
"Differential-phase-shift quantum-key-distribution protocol with a small number of random delays"
Phys. Rev. A 95, 042301 (2017).

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2016 fiscal year
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Le Bin Ho and Nobuyuki Imoto
"Generalized modular-value-based scheme and its generalized modular value"
Phys. Rev. A 95, 032135 (2017)

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Yuki Takeuchi and Yasuhiro Takahashi
"Ancilla-driven instantaneous quantum polynomial time circuit for quantum supremacy"
Phys. Rev. A 94, 062336 (2016).

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Motoki Asano, Shoichi Komori, Rikizo Ikuta, Nobuyuki Imoto, Sahin Kaya Ozdemir, and Takashi Yamamoto
"Visible light emission from a silica microbottle resonator by second- and third-harmonic generation "
Opt. Lett. 41, 5793-5796 (2016).

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Kazuhiro Yokota, and Nobuyuki Imoto
"When a negative weak value -1 plays the counterpart of a probability 1"
New J. Phys. 18 123002 (2016).

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Taro Yamashita, Kentaro Waki, Shigehito Miki, Robert A. Kirkwood, Robert H. Hadfield, Hirotaka Terai,
"Superuconducting nanowire single-photon detectors with non-periodic dielectric multilayers"
Scientific Reports 6, 35240(2016).

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Koji Azuma, Akihiro Mizutani, Hoi-Kowng Lo,
"Fundamental rate-loss trade-off for the quantum internet "
Nat. Commun. 7, 13523 (2016).

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Motoki Asano, Konstantin Y. Bliokh, Yury P. Bliokh, Abraham G. Kofman, Rikizo Ikuta, Takashi Yamamoto, Yuri S. Kivshar, Lan Yang, Nobuyuki Imoto, Sahin Kaya Ozdemir, and Franco Nori,
"Anomalous time delays and quantum weak measurements in optical micro-resonators"
Nat. Commun. 7, 13488 (2016).

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Rikizo Ikuta, Toshiki Kobayashi, Kenichiro Matsuki, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Takashi Yamamoto, Masato Koashi, Tetsuya Mukai, Nobuyuki Imoto,
"Heralded single excitation of atomic ensemble via solid-state-based telecom photon detection",
Optica 3, 1279 (2016).

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Motoaki Bamba, Kunihiro Inomata, and Yasunobu Nakamura, "Superradiant Phase Transition in a Superconducting Circuit in Thermal Equilibrium" Phys. Rev. Lett. 117, 173601 (2016).

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Yasutaka Imai, Tatsuya Nishi, Masatoshi Nishizaki, Sho Kawajiri, Yuto Muroki, Rikizo Ikuta, Kai Matsumoto, Masao Kitano, and Kazuhiko Sugiyama, "Single-ion spectroscopy system for the 2S1/2(F = 0) - 2D3/2(F = 2) transition in 171Yb+," Radio Science 51,1385 - 1395 (2016).

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Motoaki Bamba and Nobuyuki Imoto
"Maxwell boundary conditions imply non-Lindblad master equation"
Phys. Rev. A 94, 033802 (2016).

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A. Miranowicz, S. K. Ozdemir, J. Bajer, G. Yusa, N. Imoto, Y. Hirayama, and F. Nori
"Quantum state tomography of large nuclear spins in a semiconductor quantum well: Optimal robustness against errors as quantified by condition numbers"
Physical Review B 92 (7), 075312-1-18 (2015).

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Motoki Asano, Yuki Takeuchi, Sahin Kaya Ozdemir, Rikizo Ikuta, Lan Yang, Nobuyuki Imoto, and Takashi Yamamoto
"Stimulated Brillouin scattering and Brillouin-coupled four-wave-mixing in a silica microbottle@resonator"
Opt. Express 24, 12082-12092 (2016).

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Le Bin Ho and Nobuyuki Imoto
"Full characterization of modular values for finite-dimensional systems"
Phys. Lett. A 380 2129-2135 (2016).

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Motoki Asano, Sahin Kaya Ozdemir, Weijian Chen, Rikizo Ikuta, Lan Yang, Nobuyuki Imoto, and Takashi Yamamoto
"Controlling slow and fast light and dynamic pulse-splitting with tunable optical gain in a whispering-gallery-mode microcavity"
Appl. Phys. Lett. 108, 181105 (2016).

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Yuki Takeuchi, Keisuke Fujii, Rikizo Ikuta, Takashi Yamamoto, and Nobuyuki Imoto
"Blind quantum computation over a collective-noise channel"
Phys. Rev. A 93, 052307 (2016).

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Toshiki Kobayashi, Rikizo Ikuta, Shuto Yasui, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
"Frequency-domain Hong-Ou-Mandel interference"
Nature Photonics 10, 441 (2016), doi: 10.1038/nphoton.2016.74.

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Yuichi Nagamatsu, Akihiro Mizutani, Rikizo Ikuta, Takashi Yamamoto, Nobuyuki Imoto, and Kiyoshi Tamaki
"Security of quantum key distribution with light sources that are not independently and identically distributed"
Phys. Rev. A 93, 042325 (2016).

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2015 fiscal year
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Akihiro Mizutani, Nobuyuki Imoto, and Kiyoshi Tamaki
"Robustness of the round-robin differential-phase-shift quantum-key-distribution protocol against source flaws"
Phys. Rev. A 92, 060303(R) (2015).

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Motoki Asano, Muriel Bechu, Mark Tame, Sahin Kaya Ozdemir, Rikizo Ikuta, Durdu O. Guney, Takashi Yamamoto, Lan Yang, Martin Wegener and Nobuyuki Imoto
"Distillation of photon entanglement using a plasmonic metamaterial"
Sci. Rep. 5, 18313 (2015).

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Motoki Asano, Tohru Takahashi
hAnalytical investigation of optical vortices emitted from a collectively polarized dipole arrayh
Opt. Express 23, 27998-28011 (2015).

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Akihiro Mizutani, Marcos Curty, Charles Ci Wen Lim, Nobuyuki Imoto, and Kiyoshi Tamaki
hFinite-key security analysis of quantum key distribution with imperfect light sourcesh
New J. Phys. 17 093011 (2015).

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Y. Tsujimoto, Y. Sugiura, M. Ando, D. Katsuse, R. Ikuta, T. Yamamoto, M. Koashi, N. Imoto
hExtracting an entangled photon pair from collectively decohered pairs at a telecommunication wavelengthh
Opt. Express 23, 13545-13553 (2015).

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2014 fiscal year
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K. Waki, T. Yamashita, S. Inoue, S. Miki, H. Terai, R. Ikuta, T. Yamamoto, N. Imoto
"Fabrication and characterization of superconducting nanowire single-photon detectors on Si waveguide"
IEEE Trans. Appl. Supercon. 25 2200704 (2014).

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Adam Miranowicz, Karol Bartkiewicz, Jan Perina, Jr., Masato Koashi, Nobuyuki Imoto, and Franco Nori
"Optimal two-qubit tomography based on local and global measurements: Maximal robustness against errors as described by condition numbers"
Phys. Rev. A 90, 062123 (2014).

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Keisuke Fujii, Makoto Negoro, Nobuyuki Imoto, and Masahiro Kitagawa
"Measurement-Free Topological Protection Using Dissipative Feedback"
Phys. Rev. X 4, 041039 (2014).

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Akira Matsuo, Keisuke Fujii, and Nobuyuki Imoto
"Quantum algorithm for an additive approximation of Ising partition functions"
Phys. Rev. A 90, 022304 (2014).

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Kazuhiro Yokota, and Nobuyuki Imoto
"A weak-value model for virtual particles supplying the electric current
in graphene: the minimal conductivity and the Schwinger mechanism"
New J. Phys. 16 073003 (2014).

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Akihiro Mizutani, Kiyoshi Tamaki, Rikizo Ikuta, Takashi Yamamoto, and Nobuyuki Imoto
"Measurement-device-independent quantum key distribution
for Scarani-Acin-Ribordy-Gisin 04 protocol"
Sci. Rep. 4, 5236 (2014).

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Rikizo Ikuta, Toshiki Kobayashi, Shuto Yasui, Shigehito Miki, Taro Yamashita,
Hirotaka Terai, Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki,
Zhen Wang, and Nobuyuki Imoto
"Frequency down-conversion of 637 nm light to the telecommunication band
for non-classical light emitted from NV centers in diamond"
Opt. Express 22, 11205 (2014).

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2013 fiscal year
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Toshiki Kobayashi, Rikizo Ikuta, Sahin Kaya Ozdemir, Mark Tame, Takashi Yamamoto,
Masato Koashi and Nobuyuki Imoto
"Universal gates for transforming multipartite entangled Dicke states"
New J. Phys. 16 023005 (2014).

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Rikizo Ikuta, Toshiki Kobayashi, Hiroshi Kato, Shigehito Miki, Taro Yamashita, Hirotaka Terai,
Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki, Zhen Wang, and Nobuyuki Imoto
"Observation of two output light pulses from a partial wavelength converter preserving
phase of an input light at a single-photon level"
Opt. Express 21, 27865 (2013).

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Rikizo Ikuta, Toshiki Kobayashi, Hiroshi Kato, Shigehito Miki, Taro Yamashita, Hirotaka Terai,
Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki, Zhen Wang, and Nobuyuki Imoto
"Nonclassical two-photon interference between independent telecommunication light pulses
converted by difference-frequency generation"
Phys. Rev. A 88, 042317 (2013) .

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Tomoyuki Morimae,Keisuke Fujii
"Secure Entanglement Distillation for Double-Server Blind Quantum Computation"
Phys. Rev. Lett. 111, 020502 (2013) .

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Tomoyuki Morimae,Keisuke Fujii
"Blind quantum computation protocol in which Alice only makes measurements"
Phys. Rev. A 87, 050301(R) (2013).

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Hidetoshi Kumagai, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
"Robustness of quantum communication based on a decoherence-free subspace
using a counter-propagating weak coherent light pulse"
Phys Rev. A 87, 052325 (2013).

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2012 fiscal year
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Kazuhiro Igeta, Nobuyuki Imoto, and Masato Koashi
"Fundamental limit to qubit control with coherent field"
Phys. Rev. A 87, 022321-1-8 (2013).

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K. Fujii, Y. Nakata, M. Ohzeki, and M. Murao
"Measurement-Based Quantum Computation on Symmetry Breaking Thermal States" (selected to Editors' suggestion)
Phys. Rev. Lett. 110, 120502 (2013).

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Rikizo Ikuta, Hiroshi Kato, Yoshiaki Kusaka, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Mikio Fujiwara,
Takashi Yamamoto, Masato Koashi, Masahide Sasaki, Zhen Wang, and Nobuyuki Imoto
"High-fidelity conversion of photonic quantum information to telecommunication wavelength with superconducting single-photon detectors"
Phys. Rev. A 87, 010301(R) (2013).

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M. Ohzeki and K. Fujii
"Duality analysis on random planar lattices"
Physical Review E 86, 051121 (2012).

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Keisuke Fujii and Yuuki Tokunaga
"Error and loss tolerances of surface codes with general lattice structures"
Phys. Rev. A 86, 020303(R) (2012).

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Tomoyuki Morimae and Keisuke Fujii
"Blind topological measurement-based quantum computation"
Nature Communications 3, 1036 (2012)

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Kazuhiro Yokota and Nobuyuki Imoto
"A strange weak value in spontaneous pair productions via a supercritical step potential"
New J. Phys. 14 083021 (2012)

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Tomoyuki Morimae and Keisuke Fujii
"Not all physical errors can be linear CPTP maps in a correlation space"
Scientific Reports 2 508 (2012)

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Koji Azuma, Hitoshi Takeda, Masato Koashi, and Nobuyuki Imoto
"Quantum repeaters and computation by a single module: Remote nondestructive parity measurement"
Phys. Rev. A85, 062309-1-7 (2012 June).

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2011 fiscal year
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K. Fujii and T. Morimae
"Computational power and correlation in a quantum computational tensor network"
Phys. Rev. A 85 032338 (2012).

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K. Fujii and T. Morimae,
"Topologically protected measurement-based quantum computation on the thermal state of a nearest-neighbor two-body Hamiltonian with spin-3/2 particles"
Phys. Rev. A 85, 010304(R) (2012).

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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",
Nat. Commun. 2 537 (2011) doi: 10.1038/ncomms1544.

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S. K. Ozdemir, E. Matsunaga, T. Tashima, T. Yamamoto, M. Koashi, and N. Imoto,
"An optical fusion gate for W-states",
New J. Phys. 13 103003 (2011).

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Kaoru Shimizu, Hiroyuki Fukasaka, Kiyoshi Tamaki, and Nobuyuki Imoto,
"Cheat-sensitive commitment of a classical bit coded in a block of m x n round-trip qubits"
Phys. Rev. A84, 022308 (2011).

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2010 fiscal year
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Rikizo Ikuta, Yohei Ono, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
"Efficient decoherence-free entanglement distribution over lossy quantum channels",
Phys. Rev. Lett. 106, 110503 (2011).
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Rikizo Ikuta, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
"Optimal local expansion of W states using linear optics and Fock states"
Phys. Rev. A 83, 012314 (2011).
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Toshiyuki Tashima, Tsuyoshi Kitano, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
"Demonstration of Local Expansion Toward Large-Scale Entangled Webs"
Phys. Rev. Lett. 105, 210503 (2010).
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T. Seki, H. Shibata, H. Takesue, Y. Tokura, N. Imoto
"Comparison of timing jitter between NbN superconducting single-photon detector and avalanche photodiode,"
Physica C 470, 1534-1537 (2010). (Available online 15 May 2010).

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2009 fiscal year
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Koji Azuma, Naoya Sota, Masato Koashi, and Nobuyuki Imoto,
"Tight bound on coherent-state-based entanglement generation over lossy channels"
Phys. Rev. A 81, 022325 (2010).

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Koji Azuma, Naoya Sota, Ryo Namiki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto,
"Optimal entanglement generation for efficient hybrid quantum repeaters",
Phys. Rev. A 80, 060303(R) (2009).

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Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto,
"Boosting up quantum key distribution by learning statistics of practical single-photon sources,"
New J. Phys. 11. 113033 (2009).

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Karol Bartkiewicz, Adam Miranowicz, and Sahin Kaya Özdemir:
"Optimal mirror phase-covariant cloning,"
Phys. Rev. A 80, 032306 (2009).

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K. Tamaki, N. Lütkenhaus, M. Koashi, and J. Batuwantudawe:
"Unconditional security of the Bennett 1992 quantum-key-distribution scheme with a strong reference pulse,"
Phys. Rev. A 80, 032302:1--9 (2009).

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Masato Koashi
"Simple security proof of quantum key distribution based on complementarity"
New J. Phys. 11 045018 (2009).

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Toshiyuki Tashima, Tetsuroh Wakatsuki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
"Local Transformation of Two Einstein-Podolsky-Rosen Photon Pairs into a Three-Photon W State"
Phys. Rev. Lett. 102, 130502 (2009). [4 pages]

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2008 fiscal year
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Kazuhiro Yokota, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
"Direct observation of Hardy's paradox by joint weak measurement with an entangled photon pair,"
New J. Phys. 11, 033011(2009).
IOP press release - Quantum paradox directly observed - a milestone in quantum mechanics
New Journal of Physics - Best of 2009

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M. S. Tame, S. K. Ozdemir, M. Koashi, N. Imoto, M. S. Kim
"Compact Toffoli gate using weighted graph states,"
Phys. Rev. A 79, 020302 (2009).

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Toshiyuki Tashima, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
"Local expansion of photonic W state using a polarization@dependent beamsplitter,"
New J. Phys. 11, 023024 (2009).

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Y. Xiao, Sahin Kaya Ozdemir, V. Gaddam, C. Dong, N. Imoto, and L. Yang
"Quantum nondemolition measurement of photon number via optical Kerr effect in an ultra-high-Q microtoroid cavity,"
Opt. Express 16, 21462-21475 (2008).

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Ryo Namiki, Masato Koashi, and Nobuyuki Imoto
"Fidelity Criterion for Quantum-Domain Transmission and Storage of Coherent States Beyond the Unit-Gain Constraint,"
Phys. Rev. Lett. 101, 100502(2008).

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T. Takano, M. Fuyama, R. Namiki, and Y. Takahashi
"Continuous-variable quantum swapping gate between light and atoms"
Phys. Rev. A 78, 010307(R) (2008).

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Takashi Yamamoto, Kodai Hayashi, Sahin Kaya Ozdemir, Masato Koashi and Nobuyuki Imoto
"Robust photonic entanglement distribution by state-independent encoding onto decoherence-free subspace"
Nature Photonics 2, 488 - 491 (2008).
JSTEvX[X

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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"
Phys. Rev. Lett. 100, 210501 (2008).

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2007 fiscal year
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Toshiyuki Tashima Sahin Kaya Ozdemir Takashi Yamamoto Masato Koashi and Nobuyuki Imoto
"Elementary optical gate for expanding an entanglement web"
Phys. Rev. A 77, 030302(R) (2008).

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S. K. Ozdemir, K. Barkiewicz, Y. Liu, and A. Miranowicz
"Teleportation of qubit states through dissipative channels: Conditions for surpassing the no-cloning limit,"
Phys. Rev. A, 76, 042325 (2007).

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Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
"Simple and Efficient Quantum Key Distribution with Parametric Down-Conversion"
Phys. Rev. Lett. 99, 180503 (2007).
http://www.nikkei.co.jp/kansai/news/news001230.html

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T. Yamamoto, R. Nagase, J. Shimamura, S. K. Ozdemir, M. Koashi, and N. Imoto:
"Experimental ancilla-assisted qubit transmission against correlated noise using quantum parity checking,"
New J. Phys. 9 191(2007)@chosen in IOP Select

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2006 fiscal year
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Y. Kinoshita, R. Namiki, T. Yamamoto, M. Koashi, and N. Imoto:
"Selective entanglement breaking,"
Phys. Rev. A 75, 032307 (2007).

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S. K. Ozdemir, J. Shimamura, and N. Imoto:
"A necessary and sufficient condition to play games in quantum mechanical settings,"
New Journal of Physics, 9, 43 (2007).

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A. Miranowicz, S. K. Ozdemir, Yu-xi Liu, G. Chimczak, M. Koashi and N. Imoto:
"Quantum Entanglement and Teleportation of Quantum-Dot States in Microcavities,"
e-J. Surf. Sci. Nanotech. Vol. 5, p.51 (2007).

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A. Miranowicz, S. K. Ozdemir, Jiri Bajer Masato Koashi, and Nobuyuki Imoto:
"Selective truncations of an optical state using projection synthesis,"
JOSA B, Vol. 24, Issue 2, pp. 379-383 (2007).

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S. K. Ozdemir, A. Miranowicz, T. Ota, G. Yusa, N. Imoto and Y. Hirayama:
"Nuclear Spins in a Nanoscale Device for Quantum Information Processing,"
e-J. Surf. Sci. Nanotech. Vol. 4, p.669 (2006).

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Ryo Namiki, Takuya Hirano:
"Efficient-phase-encoding protocols for continuous-variable quantum key distribution using coherent states and postselection,"
Phys. Rev. A 74, 032302 (2006).

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Yuuki Tokunaga, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto:
"Fidelity estimation and entanglement verification for experimentally produced four-qubit cluster states,"
Phys. Rev. A 74, 020301(R) (23 August 2006).

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2005 fiscal year
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Y. Hirayama, A. Miranowicz, T. Ota, G. Yusa, K. Muraki, S. K. Ozdemir, and N. Imoto:
"Nanometre-scale nuclear-spin device for quantum information processing,"
J. Phys.: Condens. Matter vol.18, S885 (2006).

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Ryo Namiki, Masato Koashi, and Nobuyuki Imoto:
"Cloning and optimal Gaussian individual attacks for a@continuous- variable
quantum key distribution using coherent states and reverse reconciliation,"
Phys. Rev. A73, 032302 (2 March 2006).

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M. Koashi
"Security Of Quantum Key Distribution With Strong Phase-Reference Pulse,"
International Journal of Quantum Information Vol. 3, No. Supplement 01 75-85 (November 2005)
(Proceedings of the 1st Asia-Pacific Conference on Quantum Information Science Tainan, Taiwan, December 10-13, 2004).

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Koji Azuma, Junichi Shimamura, Masato Koashi, and Nobuyuki Imoto:
"Probabilistic cloning with supplementary information,"
Phys. Rev. A72, 032335 (28 September 2005).

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R. Namiki and T. Hirano
"Security of Continuous-variable quantum cryptography using coherent states,"
:Decline of postselection advantage "
Phys. Rev. A72, 024301 (5 August 2005).

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T. Yamamoto, J. Shimamura, S. K. Ozdemir, M. Koashi, and N. Imoto ,
gFaithful Qubit Distribution Assisted by One Additional Qubit against Collective Noise,h
Phys. Rev. Lett. 95, 040503 (22 July 2005).

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2004 fiscal year
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Yuuki Tokunaga, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto:
"Simple experimental scheme of preparing a four-photon entangled state
for the teleportation-based realization of a linear optical controlled-NOT gate,"
Phys. Rev. A71, 030301(R) (25 March 2005).

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Y. Tokunaga, T. Okamoto, and N. Imoto:
"Threshold quantum cryptography,"
Phys. Rev. A71, 012314 (10 January 2005).

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S. K. Ozdemir, J. Shimamura, F. Morikoshi, and N. Imoto:
"Dynamics of a discoordination game with classical and quantum correlations,"
Physics Letters A, vol.333, p.218, (25 October 2004).

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Yu-xi Liu, S. K. Ozdemir, A. Miranowicz, and N. Imoto:
"Kraus representation of a damped harmonic oscillator and its application,"
Phys. Rev. A70, 042308 (12 October 2004).

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M. Koashi:
"Unconditional security of coherent-state quantum key distribution with a strong
phase-reference pulse,"
Phys. Rev. Lett. 93, 120501 (15 September 2004).

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J. Shimamura, S. K. Ozdemir, F. Morikoshi and N. Imoto:
"Entangled states that cannot reproduce original classical games in
their quantum version,"
Physics Letters A, vol.328, p.20, (1 June 2004).

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2003 fiscal year
-----------------------------------------------------------------------------

Yu-xi Liu, S. K. Ozdemir, A. Miranowicz, M. Koashi, and N. Imoto:
"Exciton entanglement in two coupled semiconductor microcrystallites,"
Journal of Physics A: Mathematical and General, (29 March 2004).

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K. Tamaki and N. Lutkenhaus:
"Unconditional Security of the Bennett 1992 quantum key-distribution
protocol over a lossy and noisy channel,"
Phys. Rev. A69, 032316 (22 March 2004).

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S. K. Ozdemir, J. Shimamura, and N. Imoto:
"Quantum advantage does not survive in the presence of a corrupt source:
Optimal strategies in simultaneous move games,"
Physics Letters A, vol.325, p.104, (19 March 2004).

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M. Koashi and A. Winter:
"Monogamy of quantum entanglement and other correlations,"
Phys. Rev. A69, 022309 (18 February 2004).

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J. Shimamura, S. K. Ozdemir, F. Morikoshi, and N. Imoto:
"Quantum and classical correlations between players in game theory,"
International Journal of Quantum Information, vol.2, p.79, (January 2004).

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S. K. Ozdemir, T. Yamamoto, M. Koashi, and N. Imoto:
gQuantum state generation and entanglement manipulation using linear optics,h
Turkish Journal of Physics, 27, pp.459-479 (8 September 2003).

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K. Tamaki, M. Koashi, and N. Imoto:
gUnconditionally secure key distribution based on two nonorthogonal states,h
Physical Review Letters, 90, 167904 (24 April 2003).

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