2018
|
14. | Yoshiaki Tsujimoto; Motoki Tanaka; Nobuo Iwasaki; Rikizo Ikuta; Shigehito Miki; Taro Yamashita; Hirotaka Terai; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources (Journal Article) In: Scientific reports, 8 (1), pp. 1446, 2018. @article{tsujimoto2018high,
title = {High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources},
author = {Yoshiaki Tsujimoto and Motoki Tanaka and Nobuo Iwasaki and Rikizo Ikuta and Shigehito Miki and Taro Yamashita and Hirotaka Terai and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
doi = {10.1038/s41598-018-19738-8},
year = {2018},
date = {2018-01-23},
journal = {Scientific reports},
volume = {8},
number = {1},
pages = {1446},
publisher = {Nature Publishing Group},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
13. | Yoshiaki Tsujimoto; Motoki Tanaka; Nobuo Iwasaki; Rikizo Ikuta; Shigehito Miki; Taro Yamashita; Hirotaka Terai; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources (Journal Article) In: Scientific reports, 8 (1), pp. 1446, 2018. @article{tsujimoto2018highb,
title = {High-fidelity entanglement swapping and generation of three-qubit GHZ state using asynchronous telecom photon pair sources},
author = {Yoshiaki Tsujimoto and Motoki Tanaka and Nobuo Iwasaki and Rikizo Ikuta and Shigehito Miki and Taro Yamashita and Hirotaka Terai and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
doi = {10.1038/s41598-018-19738-8},
year = {2018},
date = {2018-01-23},
journal = {Scientific reports},
volume = {8},
number = {1},
pages = {1446},
publisher = {Nature Publishing Group},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
2017
|
12. | Yoshiaki Tsujimoto; Yukihiro Sugiura; Motoki Tanaka; Rikizo Ikuta; Shigehito Miki; Taro Yamashita; Hirotaka Terai; Mikio Fujiwara; Takashi Yamamoto; Masato Koashi; Masahide Sasaki; Nobuyuki Imoto High visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement (Journal Article) In: Opt. Express, 25 (11), pp. 12069–12080, 2017. @article{Tsujimoto:17,
title = {High visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement},
author = {Yoshiaki Tsujimoto and Yukihiro Sugiura and Motoki Tanaka and Rikizo Ikuta and Shigehito Miki and Taro Yamashita and Hirotaka Terai and Mikio Fujiwara and Takashi Yamamoto and Masato Koashi and Masahide Sasaki and Nobuyuki Imoto},
url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-25-11-12069},
doi = {10.1364/OE.25.012069},
year = {2017},
date = {2017-05-01},
journal = {Opt. Express},
volume = {25},
number = {11},
pages = {12069--12080},
publisher = {OSA},
abstract = {A high visibility Hong-Ou-Mandel (HOM) interference between two independently prepared photons plays an important role in various photonic quantum information processing. In a standard HOM experiment using photons generated by pulse-pumped spontaneous parametric down conversion (SPDC), larger detection time windows than the coherence time of photons have been employed for measuring the HOM visibility and/or drawing the HOM dip. If large amounts of stray photons continuously exist within the detection time windows, employing small detection time windows is favorable for reducing the effect of background noises. Especially, such a setup is helpful for the HOM experiment using continuous wave (cw)-pumped SPDC and the time-resolved coincidence measurement. Here we argue that the method for determining the HOM visibility used in the previous cw experiments tends to suffer from distortion arising from biased contribution of the background noises. We then present a new method with unbiased treatment of the cw backgrounds. By using this method, we experimentally demonstrate a high visibility HOM interference of two heralded telecom photons independently generated by SPDC with employing cw pump light. An observed HOM visibility is 0.87 \± 0.04, which is as high as those observed by using pulse-pumped SPDC photons.},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
A high visibility Hong-Ou-Mandel (HOM) interference between two independently prepared photons plays an important role in various photonic quantum information processing. In a standard HOM experiment using photons generated by pulse-pumped spontaneous parametric down conversion (SPDC), larger detection time windows than the coherence time of photons have been employed for measuring the HOM visibility and/or drawing the HOM dip. If large amounts of stray photons continuously exist within the detection time windows, employing small detection time windows is favorable for reducing the effect of background noises. Especially, such a setup is helpful for the HOM experiment using continuous wave (cw)-pumped SPDC and the time-resolved coincidence measurement. Here we argue that the method for determining the HOM visibility used in the previous cw experiments tends to suffer from distortion arising from biased contribution of the background noises. We then present a new method with unbiased treatment of the cw backgrounds. By using this method, we experimentally demonstrate a high visibility HOM interference of two heralded telecom photons independently generated by SPDC with employing cw pump light. An observed HOM visibility is 0.87 ± 0.04, which is as high as those observed by using pulse-pumped SPDC photons. |
11. | Rikizo Ikuta; Shota Nozaki; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto Experimental demonstration of robust entanglement distribution over reciprocal noisy channels assisted by a counter-propagating classical reference light (Journal Article) In: Scientific Reports, 7 (1), pp. 4819, 2017. @article{ikuta2017experimental,
title = {Experimental demonstration of robust entanglement distribution over reciprocal noisy channels assisted by a counter-propagating classical reference light},
author = {Rikizo Ikuta and Shota Nozaki and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
doi = {10.1038/s41598-017-05008-6},
year = {2017},
date = {2017-05-01},
journal = {Scientific Reports},
volume = {7},
number = {1},
pages = {4819},
publisher = {Nature Publishing Group},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
10. | Yoshiaki Tsujimoto; Yukihiro Sugiura; Motoki Tanaka; Rikizo Ikuta; Shigehito Miki; Taro Yamashita; Hirotaka Terai; Mikio Fujiwara; Takashi Yamamoto; Masato Koashi; Masahide Sasaki; Nobuyuki Imoto High visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement (Journal Article) In: Opt. Express, 25 (11), pp. 12069–12080, 2017. @article{Tsujimoto:17b,
title = {High visibility Hong-Ou-Mandel interference via a time-resolved coincidence measurement},
author = {Yoshiaki Tsujimoto and Yukihiro Sugiura and Motoki Tanaka and Rikizo Ikuta and Shigehito Miki and Taro Yamashita and Hirotaka Terai and Mikio Fujiwara and Takashi Yamamoto and Masato Koashi and Masahide Sasaki and Nobuyuki Imoto},
url = {http://www.opticsexpress.org/abstract.cfm?URI=oe-25-11-12069},
doi = {10.1364/OE.25.012069},
year = {2017},
date = {2017-05-01},
journal = {Opt. Express},
volume = {25},
number = {11},
pages = {12069--12080},
publisher = {OSA},
abstract = {A high visibility Hong-Ou-Mandel (HOM) interference between two independently prepared photons plays an important role in various photonic quantum information processing. In a standard HOM experiment using photons generated by pulse-pumped spontaneous parametric down conversion (SPDC), larger detection time windows than the coherence time of photons have been employed for measuring the HOM visibility and/or drawing the HOM dip. If large amounts of stray photons continuously exist within the detection time windows, employing small detection time windows is favorable for reducing the effect of background noises. Especially, such a setup is helpful for the HOM experiment using continuous wave (cw)-pumped SPDC and the time-resolved coincidence measurement. Here we argue that the method for determining the HOM visibility used in the previous cw experiments tends to suffer from distortion arising from biased contribution of the background noises. We then present a new method with unbiased treatment of the cw backgrounds. By using this method, we experimentally demonstrate a high visibility HOM interference of two heralded telecom photons independently generated by SPDC with employing cw pump light. An observed HOM visibility is 0.87 \± 0.04, which is as high as those observed by using pulse-pumped SPDC photons.},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
A high visibility Hong-Ou-Mandel (HOM) interference between two independently prepared photons plays an important role in various photonic quantum information processing. In a standard HOM experiment using photons generated by pulse-pumped spontaneous parametric down conversion (SPDC), larger detection time windows than the coherence time of photons have been employed for measuring the HOM visibility and/or drawing the HOM dip. If large amounts of stray photons continuously exist within the detection time windows, employing small detection time windows is favorable for reducing the effect of background noises. Especially, such a setup is helpful for the HOM experiment using continuous wave (cw)-pumped SPDC and the time-resolved coincidence measurement. Here we argue that the method for determining the HOM visibility used in the previous cw experiments tends to suffer from distortion arising from biased contribution of the background noises. We then present a new method with unbiased treatment of the cw backgrounds. By using this method, we experimentally demonstrate a high visibility HOM interference of two heralded telecom photons independently generated by SPDC with employing cw pump light. An observed HOM visibility is 0.87 ± 0.04, which is as high as those observed by using pulse-pumped SPDC photons. |
9. | Rikizo Ikuta; Shota Nozaki; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto Experimental demonstration of robust entanglement distribution over reciprocal noisy channels assisted by a counter-propagating classical reference light (Journal Article) In: Scientific Reports, 7 (1), pp. 4819, 2017. @article{ikuta2017experimentalb,
title = {Experimental demonstration of robust entanglement distribution over reciprocal noisy channels assisted by a counter-propagating classical reference light},
author = {Rikizo Ikuta and Shota Nozaki and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
doi = {10.1038/s41598-017-05008-6},
year = {2017},
date = {2017-05-01},
journal = {Scientific Reports},
volume = {7},
number = {1},
pages = {4819},
publisher = {Nature Publishing Group},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
2005
|
8. | Takashi Yamamoto; Junichi Shimamura; Ş; Masato Koashi; Nobuyuki Imoto Faithful Qubit Distribution Assisted by One Additional Qubit against Collective Noise (Journal Article) In: Phys. Rev. Lett., 95 , pp. 040503, 2005. @article{PhysRevLett.95.040503,
title = {Faithful Qubit Distribution Assisted by One Additional Qubit against Collective Noise},
author = {Takashi Yamamoto and Junichi Shimamura and \c{S} and Masato Koashi and Nobuyuki Imoto},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.95.040503},
doi = {10.1103/PhysRevLett.95.040503},
year = {2005},
date = {2005-07-01},
journal = {Phys. Rev. Lett.},
volume = {95},
pages = {040503},
publisher = {American Physical Society},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
7. | Takashi Yamamoto; Junichi Shimamura; Ş; Masato Koashi; Nobuyuki Imoto Faithful Qubit Distribution Assisted by One Additional Qubit against Collective Noise (Journal Article) In: Phys. Rev. Lett., 95 , pp. 040503, 2005. @article{PhysRevLett.95.040503b,
title = {Faithful Qubit Distribution Assisted by One Additional Qubit against Collective Noise},
author = {Takashi Yamamoto and Junichi Shimamura and \c{S} and Masato Koashi and Nobuyuki Imoto},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.95.040503},
doi = {10.1103/PhysRevLett.95.040503},
year = {2005},
date = {2005-07-01},
journal = {Phys. Rev. Lett.},
volume = {95},
pages = {040503},
publisher = {American Physical Society},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
6. | Yuuki Tokunaga; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto Simple experimental scheme of preparing a four-photon entangled state for the teleportation-based realization of a linear optical controlled-NOT gate (Journal Article) In: Phys. Rev. A, 71 , pp. 030301, 2005. @article{PhysRevA.71.030301,
title = {Simple experimental scheme of preparing a four-photon entangled state for the teleportation-based realization of a linear optical controlled-NOT gate},
author = {Yuuki Tokunaga and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
url = {https://link.aps.org/doi/10.1103/PhysRevA.71.030301},
doi = {10.1103/PhysRevA.71.030301},
year = {2005},
date = {2005-03-01},
journal = {Phys. Rev. A},
volume = {71},
pages = {030301},
publisher = {American Physical Society},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
5. | Yuuki Tokunaga; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto Simple experimental scheme of preparing a four-photon entangled state for the teleportation-based realization of a linear optical controlled-NOT gate (Journal Article) In: Phys. Rev. A, 71 , pp. 030301, 2005. @article{PhysRevA.71.030301b,
title = {Simple experimental scheme of preparing a four-photon entangled state for the teleportation-based realization of a linear optical controlled-NOT gate},
author = {Yuuki Tokunaga and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
url = {https://link.aps.org/doi/10.1103/PhysRevA.71.030301},
doi = {10.1103/PhysRevA.71.030301},
year = {2005},
date = {2005-03-01},
journal = {Phys. Rev. A},
volume = {71},
pages = {030301},
publisher = {American Physical Society},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
2003
|
4. | Ş; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto Quantum state generation and entanglement manipulation using linear optics (Journal Article) In: Turkish Journal of Physics, 27 , pp. 459 - 479, 2003. @article{sahin2003,
title = {Quantum state generation and entanglement manipulation using linear optics},
author = {\c{S} and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
year = {2003},
date = {2003-09-01},
journal = {Turkish Journal of Physics},
volume = {27},
pages = {459 - 479},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
3. | Ş; Takashi Yamamoto; Masato Koashi; Nobuyuki Imoto Quantum state generation and entanglement manipulation using linear optics (Journal Article) In: Turkish Journal of Physics, 27 , pp. 459 - 479, 2003. @article{sahin2003b,
title = {Quantum state generation and entanglement manipulation using linear optics},
author = {\c{S} and Takashi Yamamoto and Masato Koashi and Nobuyuki Imoto},
year = {2003},
date = {2003-09-01},
journal = {Turkish Journal of Physics},
volume = {27},
pages = {459 - 479},
keywords = {multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
2001
|
2. | Masato Koashi; Takashi Yamamoto; Nobuyuki Imoto Probabilistic manipulation of entangled photons (Journal Article) In: Phys. Rev. A, 63 (030301(R)), 2001. @article{Koashi2001,
title = {Probabilistic manipulation of entangled photons},
author = {Masato Koashi and Takashi Yamamoto and Nobuyuki Imoto},
url = {https://doi.org/10.1103/PhysRevA.63.030301},
doi = {10.1103/PhysRevA.63.030301},
year = {2001},
date = {2001-02-12},
journal = {Phys. Rev. A},
volume = {63},
number = {030301(R)},
keywords = {entanglement, multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|
1. | Masato Koashi; Takashi Yamamoto; Nobuyuki Imoto Probabilistic manipulation of entangled photons (Journal Article) In: Phys. Rev. A, 63 (030301(R)), 2001. @article{Koashi2001b,
title = {Probabilistic manipulation of entangled photons},
author = {Masato Koashi and Takashi Yamamoto and Nobuyuki Imoto},
url = {https://doi.org/10.1103/PhysRevA.63.030301},
doi = {10.1103/PhysRevA.63.030301},
year = {2001},
date = {2001-02-12},
journal = {Phys. Rev. A},
volume = {63},
number = {030301(R)},
keywords = {entanglement, multi-photon interference},
pubstate = {published},
tppubtype = {article}
}
|