量子光学研究室　日本大学　井上・行方研究室

Quantum Optics Group

Institute of Quantum Science, Nihon University

量子光学と量子情報技術で未来を拓く

ACHIEVEMENT

論文（Papers）

  1. N. Namekata, N. Kobayashi, K. Nomura, T. Sako, N. Takata, and S. Inoue, ”Quantum optical tomography based on time-resolved and mode-selective single-photon detection by femtosecond up-conversion,” Sci. Rep. Vol. 13, 21080 (2023). DOI:  https://doi.org/10.1038/s41598-023-48270-7
  2. K. Hamashima, D. Wu, S. Kishimoto, S. Inoue, and S. Ohnuki, “Selectivity of dominant surface plasmon polariton modes using thin metal waveguides with grating structures,” Jpn. J. of Appl. Phys., vol. 61, pp. 082002-1–082002-7, (2022).
  3. 三枝美波,岸本誠也, 井上修一郎, 大貫進一郎, “2次元フーリエ変換を用いた散乱光パルスの伝搬方向解析,” 信学技報, vol. 122, no. 120, EST2022-35, pp. 127–131, (2022).
  4. 三枝美波, 柴垣裕紀, 岸本誠也, 井上修一郎, 大貫進一郎, “楕円柱列モデルにおける多重反射光の解析,” 信学技報, vol. 121, no. 358, EST2021-88, pp. 154-158, (2022).
  5. N. Namekata, D. Wu, H. Hagihara, S. Ohnuki, D. Fukuda, and S. Inoue, “Continuous quantum walk in a 1-dimensional plasmonic lattice structure based on metal strip waveguides,” Opt. Express Vol. 29 (16), pp. 24899-24909 (2021).
  6. A. Tada, N. Namekata, and S. Inoue, “Saturated detection efficiency of single-photon detector based on an InGaAs/InP single-photon avalanche diode gated with a large-amplitude sinusoidal voltage,” Jpn. J. Appl. Phys. Vol. 59, No. 7, 072004 (2020).
  7. 呉迪, 浜島功, 井上修一郎, 大貫進一郎, “複素周波数領域有限差分法によるプラズモニック導波路の設計及び特性検証,”電子情報通信学会論文誌C Vol. J103-C, No. 2, pp.69-77 (2020).
  8. H. Hagihara, N. Namekata, K. Yokota, and S. Inoue “Near infrared single-photon imaging　based on compressive sensing with a sinusoidally gated InGaAs/InP single-photon avalanche diode”, Proc. SPIE 11295, Advanced Optical Techniques for Quantum Information, Sensing, and Metrology, 112950R (2020).
  9. 呉迪, 浜島功, 井上修一郎, 大貫進一郎, “複素周波数領域有限差分法によるプラズモニック導波路の設計及び特性検証,”電子情報通信学会論文誌C Vol. J103-C, No. 2, pp.69-77 (2020).
  10. R. Kobayashi, K. Hattori, S. Inoue, and D. Fukuda, “Development of fast response Titanium-Gold bilayer optical TES with optical fiber self-aligment structure,” to be published in IEEE. Trans. Appl. Supercond. Vol. 29, No. 5, pp.1 – 5 (2019).
  11. K. Niizeki, K. Ikeda, M. Zheng, X. Xie, K. Okamura, N. Takei, N. Namekata, S. Inoue, H. Kosaka and T. Horikiri, “Ultrabright narrow-band telecom two-photon source for long-distance quantum communication,” Appl. Phys. Express, Vol. 11, No. 4, 042801 (2018).
  12. T. Sakaidani, R. Kobayashi, N. Namekata, G. Fujii, D. Fukuda, and S. Inoue, “Investigation of Third-Order Dispersion of Long-Range Surface-Plasmon-Polariton Waveguides Using a Hong-Ou-Mandel Interferometer,” Opt. Express Vol. 25, No. 8, pp. 9490-9501 (2017).
    本論文はOptics Express誌のEditor’s pickに選ばれました。
  13. S. Utsunomiya, N. Namekata, K. Takata, D. Akamatsu, S. Inoue, and Y. Yamamoto, “Binary phase oscillation of two mutually coupled semiconductor lasers,” Opt. Express Vol. 23, No. 5, pp. 6029-6040 (Feb. 26, 2015).
  14. G. Fijii, D. Fukuda, and S. Inoue, “Direct observation of bosonic quantum interference of surface plasmon polaritons using photon-number-resolving detectors,” Phys. Rev. B Vol. 90, 085430 (Aug. 25. 2014).
  15. S. Suzuki, N. Namekata, K. Tsujino, and S. Inoue, “Highly enhanced avalanche probability using sinusoidally gated silicon avalanche photodiode,” Appl. Phys. Lett. Vol. 104, No. 4, 041105 (Jan. 28. 2014).
  16. Q.-L. Wu, N. Namekata, and S. Inoue, “Sinusoidally Gated InGaAs Avalanche Photodiode with Direct Hold-Off Function for Efficient and Low-Noise Single-Photon Detection,” Appl. Phys. Express Vol. 6, No. 6, 062202 (May 23. 2013)
  17. Q.-L. Wu, N. Namekata, and S. Inoue, “High-fidelity entanglement swapping at　telecommunication wavelengths,” J. Phys. B: At. Mol. Opt. Phys. Vol.46, No. 23, 235503 (Nov. 20. 2013).
  18. G. Fujii, T. Segawa, S. Mori, N. Namekata, D. Fukuda, and S. Inoue, “Preservation of photon indistinguishability after transmission through surface-plasmon-polariton waveguide,” Opt. Lett. 37, No. 9, pp. 1535-1537 (May. 1 2012)
  19. S. Arahira, N. Namekata, T. Kishimoto, and S. Inoue, “Experimental studies in generation of high-purity photon-pairs using cascaded χ(2) processes in a periodically poled LiNbO3 ridge-waveguide device,” J. Opt. Soc. Am. B Vol. 29, No. 3, pp. 434-442 (Mar. 1 2012)
  20. G. Fujii, D. Fukuda, T. Numata, A. Yoshizawa, H. Tsuchida, and S. Inoue, “Thin gold covered titanium transition edge sensor for optical measurement,” J. Low Temp. Phys. 167 (5-6), 815-821 (Jan. 25 2012).
  21. N. Namekata, H. Takesue, T. Honjo, Y. Tokura, and S. Inoue, “High-rate quantum key distribution over 100 km using ultra-low-noise, 2-GHz sinusoidally gated InGaAs/InP avalanche photodiodes,” Opt. Express 19 (11), 10632-10639 (2011.5.23)
  22. N. Namekata and S. Inoue, “Ultra-low-noise high-speed single-photon detection using a sinusoidally gated InGaAs/InP avalanche photodiode,” in Proc. SPIE 7945 (SPIE press,U.S.A., 2011.5.26) 79452K.
  23. C. Kothe, G. Björk, S. Inoueand M. Bourennane, “On the efficiency of quantum lithography,” New J. Phys. 13 043028 (April 19, 2011).
  24. D. Fukuda, G. Fujii, T. Numata, K. Amemiya, A. Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Titanium-based transition edge photon number resolving detector with 98 % detection efficiency with index-matched small-gap fiber coupling,” Opt. Express, 19 (2), 870-875 (2011.1.17)
  25. D. Fukuda, G. Fujii, T. Numata, K. Amemiya, A. Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Titanium Superconducting Photon-Number-Resolving Detector,” IEEE Trans. Appl. Supercond. 21 (3), 241-245 (2011.5.27)
  26. K. Tsujino, D. Fukuda, G. Fujii, S. Inoue, M. Fujiwara, M. Takeoka, and M. Sasaki, “Quantum Receiver beyond the Standard Quantum Limit of Coherent Optical Communication,” Phys. Rev. Lett. 106 (25), 250503 (2011.6.24)
  27. S. Arahira, N. Namekata, T. Kishimoto, H. Yaegashi, and S. Inoue, “Generation of polarization entangled photon pairs at telecommunication wavelength using cascaded χ(2) processes in a periodically poled LiNbO3 ridge waveguide,” Opt. Express 19 (17), 16032-16043 (2011.8.15)
  28. N. Dorenbos, H. Sasakura, M. P. van Kouwen, N. Akopian, S. Adachi, N. Namekata, M. Jo, J. Motohisa, Y. Kobayashi, K. Tomioka, T. Fukui, S. Inoue, H. Kumano, C. M. Natarajan, R. H. Hadfield, T. Zijlstra, T. M. Klapwijk, V. Zwiller, and I. Suemune: “Position controlled nanowires for infrared single photon emission”, Appl. Phys. Lett. 97(17), 171106 (Oct. 2010)
  29. N. Namekata, Y. Takahashi, G. Fujii, D. Fukuda, S. Kurimura and S. Inoue, “Non-Gaussian operation based on photon subtraction using a photon-number-resolving detector at a telecommunications wavelength”, Nature Photonics, 4(9), 655 – 660 (July 2010)
  30. N. Namekata, S. Adachi, and S. Inoue, “Ultra-Low-Noise, Gated Avalanche Photodiode for High-Speed Single-photon Detection at Telecommunication Wavelengths,” IEEE Photo. Tech. Lett. 22(8), 529-531 (April 2010).
  31. K. Tsujino, D. Fukuda, G. Fujii, S. Inoue, M. Fujiwara, M. Takeoka, and M. Sasaki, “Sub-shot-noise-limit discrimination of on-off keyed coherent signals via a quantum receiver with a superconducting transition edge sensor,” Opt. Express 18(8), 8107-8114 (April 2010)
  32. N. Namekata, S. Adachi, and S. Inoue, “High-Speed Single-Photon Detection Using 2-GHz Sinusoidally Gated InGaAs/InP Avalanche Photodiode,” Quantum Communication and Quantum Networking (Springer), pp. 34-38 (Jan. 2010).
  33. N. Namekata, T. Kono, S. Kurimura, and S. Inoue, “Narrowband Polarization-Entangled Photon Pairs in Telecommunication Band Using a Type-II Periodically Poled Lithium Niobate Waveguide,” Quantum Communication and Quantum Networking (Springer), pp. 261–265 (Jan. 2010).
  34. G. Fujii, D. Fukuda, T. Numata, A. Yoshizawa, H. Tsuchida, S. Inoue, T. Zama, “Fiber Coupled Single Photon Detector with Niobium Superconducting Nanowire’’, Quantum Communication and Quantum Networking (Springer), pp.220-224 (Jan. 2010).
  35. S. Mori, K. Hasegawa, T. Segawa, Y. Takahashi, and S. Inoue, “Interference of Photon Emitted by a Slit–Groove Structure after the Conversion of Photon to Surface Plasmons,” Jpn. J. Appl. Phys. 48, 062001, (June 2009).
  36. S. Mori, K. Hasegawa, T. Segawa, Y. Takahashi, and S. Inoue, “Optical Transmission Properties of Subwavelength Slit Structures in Visible Wavelength Range,” Jpn. J. Appl. Phys. 48, 052001, (May 2009).
  37. N. Namekata, S. Adachi, and S. Inoue, “1.5 GHz single-photon detection at telecommunication wavelengths using sinusoidally gated InGaAs/InP avalanche photodiode,” Opt. Express, 17 (8), 6275-6282 (April 2009).
  38. J. Söderholm and S. Inoue, “The Negative Binomial Distribution in Quantum Physics,” Proceedings of The 9th International Symposium on Foundations of Quantum Mechanics in Light of New Technology, World Scientific, pp. 345-348 (2009).   
  39. S. Adachi, N. Namekata, and S. Inoue, “Telecom-band single-photon detector with a gigahertz repetition frequency using a sinusoidally gated avalanche photodiode,” Ninth International Conference on QCMC: AIP Conference Proceedings, 1110, 287-290 (April 2009).
  40. Y. Takahashi, S. Komatsu, and S. Inoue, “Detector imperfections in a recent scheme for Schrödinger-cat generation,” Ninth International Conference on QCMC: AIP Conference Proceedings, 1110, 275-278 (April 2009).
  41. J. Söderholm and S. Inoue, “Simple Class of Nonclassical States Generated by Seeded Down Conversion and Imperfect Photon Detection,” Ninth International Conference on QCMC: AIP Conference Proceedings, 1110, 217-219 (April 2009).
  42. D. Fukuda, G. Fujii, T.Numata, A.Yoshizawa, H. Tsuchida, S. Inoue, and T. Zama, “Titanium TES based photon number resolving detectors with 1 MHz counting rate and 65 % quantum efficiency”, Proceedings of SPIE: Quantum Communications Realized II, 7236, 72360C (January 2009).
  43. D. Fukuda, G. Fujii, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Photon number resolving detection with high speed and high quantum efficiency”, Metologia, 46 (4), S288-S292 (August 2009).
  44. G. Fujii, D. Fukuda, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Fabrication of multi-layered absorption structure for high quantum efficiency photon detectors” The Thirteenth International Workshop on Low Temperature Detectors-LTD13. AIP Conference Proceedings, 1185, 719-722 (April 2009).
  45. Y. Takahashi, J. Söderholm, K. Hirano, N. Namekata, S. Machida, S. Mori, S. Kurimura, S. Komatsu, and S. Inoue, “Effects of dispersion on squeezing and photon statistics of down-converted light,” Phys. Rev. A 77 (4), 043801 (April 2008).
  46. D. Fukuda, G. Fujii, A. Yoshizawa, H. Tsuchida, R. M. T. Damayanthi, H. Takahashi, S. Inoue and M. Ohkubo, “High Speed Photon Number Resolving Detector with Titanium Transition Edge Sensor”, J. Low Temp. Phys. 151 (1-2), 100-105 (January 2008).
  47. N. Namekata, G. Hujii, T. Honjo, H. Takesue, and S. Inoue, “Differential Phase Shift Quantum Key Distribution Using Single-Photon Detectors Based on a Sinusoidally Gated InGaAs/InP Avalanche Photodiode,” Appl. Phys. Lett. 91 (1), 011112 (July 2007).
  48. G. Fujii, N. Namekata, M. Motoyo, S. Kurimura, and S. Inoue, “Bright narrowband photon-pairs at an optical telecommunication wavelength using Type-II periodically poled lithium niobate waveguide,” Opt. Express 15 (20), 12769-12776 (October 2007).
  49. N. Namekata, S. Mori, and S. Inoue, “Single-photon source for telecommunication wavelengths using non-degenerate photon pairs from a periodically poled LiNbO3 waveguide” J. J. Appl. Phys. 46 (6A), 3410-3415 (June 2007).
  50. 笹森真司, 行方直人, 井上修一郎, “1550nm帯単一光子検出器の500MHz動作,” 電子情報通信学会論文誌 J89-C (12), 1085-1096 (December 2006).
  51. N. Namekata, S. Sasamori, and S. Inoue, “800 MHz Single-Photon Detection at 1550-nm Using an InGaAs/InP Avalanche Photodiode Operated with a Sine Wave Gating,” Opt. Express 14 (21), 10043-10049 (October 2006).

    This paper was featured on the research highlight for Nature photonics (November, 2006)

  52. N. Namekata, and S. Inoue, “High-efficiency interaction-free measurements using a stabilized Fabry–Pérot cavity,” J. Phys. B: At. Mol. Opt. Phys. 39, 3177-3183 (August 2006).

  53. S. Mori, J. Soderholm, N. Namekata, and S. Inoue, “On the distribution of 1550-nm photon pairs efficiently generated using a periodically poled lithium niobate waveguide,” Opt. Commun. 264 (1), 156-162 (August 2006).
  54. J. Söderholm, K. Hirano, S. Mori, S. Kurimura, and S. Inoue, “Analysis of the generation of photon pairs in periodically poled lithium niobate,” pp. 46-49 in proceedings of The 8th International Symposium on Foundations of Quantum Mechanics in Light of New Technology, World Scientific (June 2006): quant/ph 0511128v2.
  55. Namekata, S.Mori, and S.Inoue, ”Quantum key distribution over an installed multimode optical fiber local area network,” Opt. Express 13 (25), 9961-9969 (December 2005).
  56. 行方直人, 森茂彦, 本谷将之, 平野圭一, 井上修一郎, “パラメトリック下方変換光子対を用いた1550nm帯単一光子発生,” 電子情報通信学会論文誌 J88-C (5), 303-313 (May 2005).

    (翻訳) N. Namekata, Y. Makino, S. Inoue, “Single-photon generation at 1550nm using a periodically poled lithium niobate waveguide”, IEICE Electronics and Communications in Japan (part II: Electronics) 89 (2), 8-17 (February 2006).

  57. 末松知恵, 行方直人, 島田一平, 井上修一郎, “光子検出による物理乱数発生とその評価,” 電子情報通信学会論文誌 J88-A (9), 1063-1070 (September 2005).
  58. 森茂彦, 本谷将之, 行方直人, 井上修一郎, “周期分極反転二オブ酸リチウム導波路による1550nm帯における相関光子対の発生,” 電子情報通信学会論文誌 J87-C (9), 675-685 (September 2004).

    (翻訳) S. Mori, M. Motoya, N. Namekata and S. Inoue, “Generation of correlated photon pairs in the 1550nm band using a periodically poled lithium niobate waveguide”, IEICE Electronics and Communications in Japan: (PartⅡ: Electronics) 88 (11), 28-36 (November 2005)

  59. 行方直人, 井上修一郎, ”1550nm帯における長距離量子暗号鍵配布,” 電子情報通信学会論文誌 J86-C (8), 920-926, (August 2003).
  60. J. Söderholm, G. Björk, B. Hessmo, and S. Inoue, “Quantum limits on phase-shift detection using multimode interferometers,” Phys. Rev. A 67 (5), 053803 (May 2003)
  61. 行方直人, 牧野雄生, 井上修一郎,“長距離量子暗号通信のための単一光子検出器,” 電子情報通信学会論文誌 J85-C (11), 978-982 (November 2002).

    (翻訳) N. Namekata, Y. Makino, and S. Inoue, “Single-Photon Detector for Long-Distance Quantum Cryptography”, IEICE Electronics and Communications in Japan (part Ⅱ: Electronics) 86 (5), 10-15 (May 2003).

  62. N. Namekata and S. Inoue, “Fiber-Optic Quantum Key Distribution at 1550nm,” pp. 96-97 in Proceedings of ERATO Workshop on Quantum Information Science 2002 (September 2002).

  63. N. Namekata, Y. Makino, and S. Inoue, ”Single-photon detector for long-distance fiber-optic quantum key distribution”, Opt. Lett.. 27 (11), 954-956 (June 2002).

  64. H. Watanabe and S. Inoue, “Experimental Demonstration of Two-Dimensional Interaction-Free Imaging,” pp. 148-150 in Proceedings of the 8th Asia-Pacific Physics Conference (World Scientific (May 2001).

  65. G. Björk, S. Inoue, and J. Söderholm, “Visibility is not a good measure of a well-defined relative phase,” Phys. Rev. A 62 (2), 023817 (July 2000).

  66. S. Inoue and G. Björk, “Experimental Demonstration of Exposure-Free Imaging and Contrast Amplification,” J. Opt. B:Quantum Semiclassical Opt. 2 (3), 338-345 (June 2000).

国際会議発表（International Conferences）

  1. N. Namekata and S. Inoue, “Heralding single-photon replicator using an fiber-optic polarization interferometer” SPIE Quantum west/Photonics West, Quantum Computing, Communication, and Simulation IV, 12911-112 (Jan. 27- Feb. 1, 2024).[Contributed poster].
  2. S. Namekata, N. Namekata, S. Ohya, and S. Inoue, “Continuous-time quantum walk in a frequency-domain system using a frequency-stabilized laser,” 10th International workshop of Qunatum simulation and Quantum Walk (QSQW 2023), Tsukuba (Nov. 10 ~ 12, 2023) P18 [Contributed poster].
  3. N. Namekata, N. Kobayashi, K. Nomura, T. Sako, N. Takata, and S. Inoue, “Quantum Optical Tomography using a Time-Resolved and Mode-Selective Frequency-Up-Conversion Detector,” 2023 Conference on Lasers and Electro-Optics/Europe – European Quantum Electronics Virtual Conferences (CLEO®/Europe-EQEC 2023), ICM, Munich, Germany, PD-2.4 (June 26-30, 2023). [Contributed talk]
  4. H. Hagihara, K. Yokota, N. Namekata, and S. Inoue, “Near infrared single-photon imaging based on compressive sensing with a sinusoidally gated InGaAs/InP single-photon avalanchediode,” the SPIE. the optoelectronics, photonic materials and devices conference (OPTO), San Francisco, USA, (Feb. 1-6, 2020). [Contributed talk]
  5. D. Wu, T. Yamaguchi, S. Inoue, S. Ohnuki, “Time-division Efficient Parallel Algorithm for Designing Metallic Slabs for Quantum Walk,” Photonics and Electromagnetics Research Symposium 2019 (PIERS), Xiamen, China, 2A18b-1 (Dec. 17-20, 2019). [Contributed talk]
    D. Wuは1st Prize of Best Student Paper Award (SC1: EM Theory, CEM, EMC, Quantum Physics, Multiphysics, and Scattering)を受賞しました.
  6. Hamashima, D. Wu, S. Kishimoto, S. Inoue, and S. Ohnuki, “Investigation of Plasmon Modes for a Thin-metal Waveguide Using Grating Structure,” Progress In Electromagnetics Research Symposium (PIERS 2019), 1P5-8, p. 268, Xiamen, China, December 2019.
  7. Hamashima, D. Wu, S. Kishimoto, S. Inoue, and S. Ohnuki, “Fundamental Study of Surface Plasmon Modes Using Grating Structure,” 2019 URSI-Japan Radio Science Meeting (URSI-JRSM 2019), BP-25, p. 155, Tokyo, Japan, September 2019.
  8. Ohnuki, M. Endo, K. Hamashima, R. Ohnishi, N. Taniguchi, T. Tamaru, D. Wu, R. Ozaki, and S. Inoue, “Efficient Finite Difference Schemes for Designing Electromagnetic Devices”, URSI AP-RASC 2019, March 9-15, New Delhi, India, 2019.
  9. D. Wu, K. Hamashima, N. Namekata, S. Inoue, and S. Ohnuki, “Design of Plasmonic Devices by a Time-frequency Domain Analysis Using the FDCFD-FILT Method,” Photonics and Electromagnetics Research Symposium 2019 (PIERS), Xiamen, China, 2P4-8 (Dec. 17-20, 2019). [Contributed talk]
  10. N. Namekata, D. Wu, S. Ohnuki, D. Fukuda, and S. Inoue, “Continuous quantum walk in 1-dimensional lattice structure based on a plasmonic waveguide,” International Symposium on Hybrid Quantum Systems 2019, Shimane, Japan, Wed-A1-2 (Dec. 1-4, 2019). [Contributed talk]
  11. H. Hagihara, K. Yokota, N. Namekata, and S. Inoue, “Near infrared single-pixel imaging of a spatial distribution of photonic quantum walkers,” International Symposium on Hybrid Quantum Systems 2019, Shimane, Japan, P24 (Dec. 1-4, 2019). [Contributed poster]
  12. N. Namekata, D. Wu, S. Ohnuki, D. Fukuda, and S. Inoue, “Quantum walk in a plasmonic waveguide lattice structure,” International Conference on Emerging Quantum Technology, Hefei, China, (Sep. 15-20, 2019). [Invited talk]
  13. N. Namekata, R. Kobayashi, T. Naka, A. Tada, D. Fukuda, and S. Inoue, “Plasmonic Quantum Walk in Gold Strip Parallel Waveguides,” 2019 Conference on Lasers and Electro-Optics Europe & 16th European Quantum Electronics Conference (CLEO/Europe-EQEC 2019), Munich, Germany, EB-P.15 (June. 23-27, 2019). [Contributed poster]
  14. K. Hattori, R. Kobayashi, S. Inoue, K.Niwa, T. Numata, D. Fukuda, “Characterization of optical transition-edge sensors,” Applied Superconductivity Conference (ASC 2018), Seattle, WA, USA (Oct. 28 – Nov. 2, 2018), 1EOr2C-02. [Contributed talk]
  15. R. Kobayashi, K. Hattori, S. Inoue, D. Fukuda, “Development of fast response Titanium-Gold bilayer optical TES with optical fiber self-alignment structure,” Applied Superconductivity Conference (ASC 2018), Seattle, WA, USA (Oct. 28 – Nov. 2, 2018), 2EPo2D-12. [Contributed poster]
  16. K. Nilzeki, K. Ikeda, M. Zheng, X. Xie, K. Okamura, N. Takei, N. Namekata, S.Inoue, H. Kosaka, T. Horikiri, “1.5-μm Narrow-Band Two-Photon Source for Long-Distance Quantum Communication,” 2018 Pacific-Rim Conference on Laser and Electro-Optics (CLEO-PR 2018), Hong Kong, Hong Kong, Th4J.6 (2018). [Contributed talk]
  17. N. Namekata, M.Oya, J. Nishikawa and S. Inoue, “Generation and Detection of 256 Photonic Quantum States Using Deformable-Mirror-Based Adaptive Optics and Its Application to Quantum Secure Authentication,” Conference on Lasers and Electro-Optics (CLEO 2018), San Jose, CA, USA (May 13- May 18, 2018). [Contributed talk]
  18. A. Tada, N. Namekata and S. Inoue, “Single-photon buffer at a telecommunication wavelength using a fiber-optic switch,” 2017 Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2017), Singapore, Republic of Singapore (July 31-August 4, 2017). [Contributed poster]
  19. R. Takahata, N. Namekata, A. Tada, and S. Inoue, “Single-Photon Detection in 900 nm Range　Using InGaAs/InP Single-Photon Avalanche Diode,” 2017 Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2017), Singapore, Republic of Singapore (July 31- August 4, 2017). [Contributed poster]
  20. M. Oya, N. Namekata, J. Nishikawa and S. Inoue, “Quantum secure authentication system using adaptive optics,” 2017 Pacific Rim Conference on Lasers and Electro-Optics　(CLEO-PR 2017), Singapore, Republic of Singapore (July 31-August 4, 2017). [Contributed poster]
  21. A. Tada, N. Namekata, and S. Inoue, “Sinusoidally gated InGaAs/InP avalanche photodiode with 53% photon detection efficiency at 1550 nm,” 2016 Conference on Lasers and Electro-Optics (CLEO 2016), San Jose, CA, USA (June 5-10, 2016). [Contributed talk]
  22. N. Namekata, A. Tada, G.-L. Shentu, Q. Zhang, J.-W. Pan, and S. Inoue, “85% Single-Photon Detection Efficiency at 780 nm Using a Silicon Avalanche Photodiode with High-Voltage Gating,” 5th International Conference on Quantum Cryptography (QCrypt2015), Tokyo, Japan, (Sept. 28 -Oct. 2, 2015). [Contributed poster]
  23. N. Namekata, A. Tada, and S. Inoue, “High Efficiency Near-Infrared Single-Photon Detector Using a Sinusoidally Gated InGaAs/InP Single-Photon Avalanche Photodiode,” Single Photon Workshop 2015, Geneva, Switzerland, (July 13-17, 2015). [Invited talk]
  24. A. Tada, N. Namekata, and S. Inoue, “Gated Silicon Avalanche Photodiode With 85% Single-Photon Detection Efficiency,” Single Photon Workshop 2015, Geneva, Switzerland, (July 13-17, 2015). [Contributed poster]
  25. S. Inoue, G. Fujii, and D. Fukuda, “Quantum Plasmonics with Superconducting Detectors Toward Quantum Information Processing,” 26th International Symposium on Superconductivity, FD-17-INV, Tokyo, Japan (November 18-20, 2013)[Invited talk].
  26. S. Ohnuki, Y.Sekiguchi, D. T. Quang, G. Fujii and S.Inoue　”Design of Plasmonic Devices for Novel Photodetectors,” 2013 Asia-Pacific Radio Science Conference, PI-BFK-3, 290606. Taipei, Taiwan, (Sep. 3-7, 2013) [Contributed poster].
  27. N. Namekata, “Entanglement distribution and swapping at telecommunication wavelengths using sinusoidally gated InGaAs/InP avalanche photodiodes,” Quantum, Crystal, Graphene and New Particle Science Boston Symposium 2013, Boston, USA, (Sep.4-5. 2013). [Invited talk]
  28. S. Inoue, Q. L. Wu and N. Namekata, “Sinusoidally Gated InGaAs/InP Avalanche Photodiodes for Entanglement-based Quantum Key Distribution,” 96th OSA’s annual meeting (Frontiers in Optics) / APS/DLS 28th annual meeting (Laser Science), Rochester, USA, FW4J.1. (October 14-18. 2012)[Invited talk]
  29. N. Namekata “Recent progress of near-infrared single-photon detector based on InGaAs/InP avalanche photodiode and its application to quantum technology,” The International Conference on Quantum Foundation and Technology, Dunhuang, China (August. 25-30 2012)[Invited talk]
  30. N. Namekata, Q. L. Wu, and S. Inoue, “Free-Running Single-Photon Detection at Telecommunication Wavelength Using a Sinusoidally Gated InGaAs/InP Avalanche Photodiode,” The International Conference on Quantum Foundation and Technology, Dunhuang, China (August. 25-30 2012)[Contributed poster]
  31. Q.-L. Wu, N. Namekata, and S. Inoue, “Hong-Ou-Mandel interference with photon pairs at 1550nm created in spatially separated sources,” The International Conference on Quantum Foundation and Technology, Dunhuang, China (August. 25-30 2012)[Contributed poster]
  32. M. Sakaidani, G. Fujii, A. Fujikake, N. Namekata, D. Fukuda, and S. Inoue, “Mach-Zehnder interferometer using a long-range surface plasmon polariton coupler”, SPIE Optics + Photonics, 8457-74, San Diego, USA (August. 12-16 2012) [Contributed poster]
  33. G. Fujii, T. Sakaidani, A. Fujikake, N. Namekata, D. Fukuda, and S. Inoue,“ Measurement of the surface plasmon polariton waveguide coupling ratio using quantum interference,” The Sixth International Conference on Nanophotonics (ICNP), P29, Beijin, China (May. 27-30 2012)[Contributed poster]
  34. G. Fujii, A. Fujikake, N. Namekata, D. Fukuda, and S. Inoue, “Experimental demonstration of bosonic quantum interference of single surface plasmon polaritons,” CLEO: QELS-Fundamental Science, QF1D.6., San Jose, USA, (May. 6-11 2012)[Contributed talk]
  35. N. Namekata and S. Inoue、“Ultra-low-noise high-speed single-photon detection using a sinusoidally gated InGaAs/InP avalanche photodiode,” SPIE Photonics West, 7945-94, San Francisco, USA (Jan. 23-27 2011) [Invited talk]
  36. N. Namekata, H. Takesue, T. Honjo, Y. Tokura, and S. Inoue, “Practical Quantum Key Distribution Over 100 km Using Sinusoidally Gated InGaAs/InP Avalanche Photodiodes”, CLEO/QELS 2011, JTuC3, Baltimore, USA (May.1-5 2011)[Contributed talk]
  37. Q.-L. Wu, N. Namekata, T. Kono, and S. Inoue, “High-Efficiency Single-photon detection using Sinusoidally Gated InGaAs/InP Avalanche Photodiode”, the annual international laser physics workshop 2011, Seminar-7.8.5, Sarajevo, Bosnia and Herzegovina (July 11-15 2011)
  38. S. Inoue, “High-Rate Distribution of Polarization Entanglement at Telecommunication Wavelength using Sinusoidally Gated InGaAs/InP Avalanche Photodiodes”, IEEE Summer topical 2011, TuA2.2, Montreal, Quebec, Canada (July. 18-20 2011)[Invited talk]
  39. G. Fujii, D. Fukuda, T. Numata, A. Yoshizawa, H. Tsuchida, and S. Inoue, “Effect of black body derived photon emission to superconducting optical detectors,” 14th International Workshop on Low Temperature Detectors, Hidelberg, (Aug. 1-5 2011)[Contributed poster]
  40. D. Fukuda, G. Fujii, A. Yoshizawa, T. Numata, K. Amemiya, S. Inoue, and H. Tsuchida, “Novel photon detector utilizing superconducting optical detection technology and its application to a few-photon radiometry,” 11th International Conference on New Development and Applications in Optical Radiometry, Maui, (Sep. 19-23 2011) [Invited talk]
  41. N. Namekata, T. Kono and S. Inoue, “Ultra Low-Noise Single-Photon Detection Using a Sinusoidally Gated InGaAs/InP Avalanche Photodiode,” Updating Quantum Cryptography and Communications (UQCC) 2010, P-62, Tokyo, Japan (Oct. 18-20 2010) [contributed poster]
  42. G. Fujii, D. Fukuda, T. Numata, K. Amemiya, A. Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “98 % quantum efficiency photon number resolving detector with titanium-based transition edge sensor,” The Tenth International Conference on Quantum Communication, Measurement and Computation (QCMC), THU-3, Brisbane, Australia (July 18-23 2010)[contributed paper]
  43. N. Namekata, T. Kono and S. Inoue, “Sinusoidally gated InGaAs/InP avalanche photodiode operated in a low temperature regime,” The Tenth International Conference on Quantum Communication, Measurement and Computation (QCMC), P2-31, Brisbane, Australia (July 18-23 2010)[contributed poster]
  44. T. Kono, N. Namekata, S. Kurimura and S. Inoue, “Distribution of polarization entangled photon pairs using sinusoidally gated InGaAs/InP avalanche photodiodes,” The Tenth International Conference on Quantum Communication, Measurement and Computation (QCMC), P2-54, Brisbane, Australia (July 18-23 2010) [contributed poster].
  45. G. Björk, C. Kothe, M. Bourennane, and S. Inoue, “Quantum lithography —possibilities and limitations”, invited talk at Quantum Optics V, Cozumel, Mexico, (November 15-19, 2010) [Invited talk].
  46. T. Segawa, G. Fujii, N. Namekata, S. Inoue, D. Fukuda, “Preservation of indistinguishability between correlated two photons under propagation in surface plasmons waveguide,” The 7th Asia-Pacific conference on Near-Field Optics (APNFO-7), Ⅳ(1)-BW3, Jeju, Korea (November 25-27, 2009) [contributed talk].
  47. N. Namekata, S. Adachi, and S. Inoue, “High-Speed Single-Photon Detection Using 2-GHz Sinusoidally Gated InGaAs/InP Avalanche Photodiode,” International Conference on Quantum Communication and Quantum Networking, Napoli, Italy (October 26-30, 2009) [contributed talk].
  48. N. Namekata, T. Kono, S. Kurimura, and S. Inoue, “Narrowband Polarization-Entangled Photon Pairs in Telecommunication Band Using a Type-II Periodically Poled Lithium Niobate Waveguide,” International Conference on Quantum Communication and Quantum Networking, Napoli, Italy (October 26-30, 2009). [contributed talk].
  49. N. Namekata, Y. Takahashi, G. Fujii, D. Fukuda, S. Kurimura, and S. Inoue, “Generation of Non-Gaussian Quantum State in Telecommunication band,” International Conference on Quantum Communication and Quantum Networking, Napoli, Italy (October 26-30, 2009). [contributed poster]
  50. G. Fujii, D. Fukuda, T. Numata, A. Yoshizawa, H. Tsuchida, S. Inoue, T. Zama, “Fiber Coupled Single Photon Detector with Niobium Superconducting,” International Conference on Quantum Communication and Quantum Networking, Napoli, Italy (October 26-30, 2009). [contributed poster]
  51. N. Namekata, S. Adachi and S. Inoue, “Generation of high-purity polarization entangled photon pairs using a Type-II PPLN waveguide,” 18th International Laser physics workshop (LPHYS ’09), Seminar-7.3.6, Barcelona, Spain (July 13-17, 2009) [contributed talk].
  52. N. Namekata, T. Kono, K. Hasegawa, S. Kurimura, and S. Inoue, “Thermal-noise-limited, gated InGaAs/InP avalanche photodiode for high-speed single-photon detection,” 18th International Laser physics workshop (LPHYS ’09), P7-6, Barcelona, Spain (July 13-17, 2009) [contributed poster].
  53. Y. Takahashi, S. Komatsu, and S. Inoue, “Enhancement of quadrature squeezing with photon subtraction,” 18th International Laser physics workshop (LPHYS ’09), P7-7, Barcelona, Spain (July 13-17, 2009) [contributed poster].
  54. D. Fukuda, G. Fujii, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Titanium TES based photon number resolving detectors with 1 MHz counting rate and 65 % quantum efficiency”, SPIE Photonics West 2009, 7236-11, San Jose, (January 24-29, 2009) [contributed talk].
  55. D. Fukuda, G. Fujii, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Low Timing Jitter and Fast Response Superconducting Photon Number Resolving Detectors”, International Superconductive Electronics Conference 2009, MD-P11, Fukuoka, Japan (June 16-19, 2009) [invited poster].
  56. K. Tsujino, D. Fukuda,G. Fujii, M. Takeoka, M. Fujiwara, S. Inoue, and M. Sasaki, “Experimental demonstration of near-optimal quantum receiver using a superconducting transition edge sensor”, The European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference 2009 (CLEO/Europe-EQEC ‘09), ED4.1-THU, Munich, Germany (June 14-19, 2009) [contributed talk].
  57. D. Fukuda, G. Fujii, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Fast response and high quantum efficiency Ti-based TES optical detector and its application to quantum information”, 13th International Workshop on Low Temperature Detectors, T220, Stanford, United States (July 20-24, 2009) [contributed talk].
  58. G. Fujii, D. Fukuda, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Fabrication of multi-layered absorption structure for high quantumefficiency photon detectors”, 13th International Workshop on Low Temperature Detectors, P105, Stanford, United States (July 20-24, 2009) [contributed poster]
  59. S. Mori, K. Hasegawa, and S. Inoue, “Polarization-dependent Enhanced Optical Transmission through One-dimensional Subwavelength Slit Arrays”, The Conference on Lasers and Electro-Optics / the Quantum Electronics and Laser Science Conference (QLEO/QELS 2008), ThP_075, San Jose, United States (May 4-8, 2008). [contributed poster].
  60. S. Adachi, N. Namekata, and S. Inoue, “Telecom-band single-photon detector with a gigahertz repetition frequency using a sinusoidally gated avalanche photodiode,” The 9th International Conference on Quantum Communication, Measurement and Computing, P2-34, Calgary, Canada (August 19-24, 2008), [contributed poster].
  61. Y. Takahashi, J. Söderholm, S. Komatsu, and S. Inoue, “Detector imperfections in a recent scheme for Schrodinger-cat generation,” The 9th International Conference on Quantum Communication, Measurement and Computing, P2-22, Calgary, Canada (August 19-24, 2008) [contributed poster].
  62. D. Fukuda, G. Fujii, A. Yoshizawa, H. Tsuchida, T. Numata, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Photon number resolving detection at near-infrared wavelength over 1 MHz counting rate,” The 9th International Conference on Quantum Communication, Measurement and Computing, P3-22, Calgary, Canada (August 19-24, 2008) [contributed poster].
  63. J. Söderholm and S. Inoue, “Simple class of nonclassical states generated by seeded down-conversion and imperfect photon detection,” The 9th International Conference on Quantum Communication, Measurement and Computing, P3-29, Calgary, Canada (August 19-24, 2008) [contributed poster].
  64. J. Söderholm and S. Inoue, “The Negative Binomial Distribution in Quantum Physics,” the 9th International Symposium on Foundations of Quantum Mechanics in the Light of New Technology, PII-26, Hatoyama, Japan (August 25-28, 2008) [contributed poster].
  65. N. Namekata, S. Adachi, and S. Inoue, “Telecom-Band Single-Photon Detection Using Sinusoidally Gated APD for GHz Clocked Systems,” the Quantum Network Demonstration and Science Conference, Vienna, Austria (October 8-10, 2008) [contributed talk].
  66. K. Hasegawa, M. Obinata, N. Namekata, S. Kurimura, and S. Inoue, “Generation of Narrowband Polarization-Entangled Photon-Pairs Using a Type-II Periodically Poled Lithium Niobate Waveguide,” the Quantum Network Demonstration and Science Conference, Vienna, Austria (October 8-10, 2008) [contributed poster].
  67. G. Fujii, D. Fukuda, T. Numata, A. Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S Inoue, and T. Zama, “High-Speed and High-Efficiency Photon-Number-Resolving Detector at Telecommunication Wavelengths,” the Quantum Network Demonstration and Science Conference, Vienna, Austria (October 8-10, 2008) [contributed poster].
  68. D. Fukuda, G. Fujii, A. Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, T. Numata, M. Ohkubo, “High-speed and high-efficiency photon-number resolving transition edge sensors with resonant cavities”, 2008 Applied Superconductivity Conference, 1EPA03, Chicago, United States (August 17-22, 2008) [contributed poster].
  69. D. Fukuda, G. Fujii, T.Numata, A.Yoshizawa, H. Tsuchida, H. Fujino, H. Ishii, T. Itatani, S. Inoue, and T. Zama, “Photon number resolving detection with high speed and high quantum efficiency”, The 10th International Conference on New Developments and Applications in Optical Radiometry, S288, Daejeon, Korea (October 12-16, 2008)[contributed talk].
  70. N. Namekata, G. Fujii, T. Honjo, H. Takesue, “Quantum key distribution using single-photon detectors based on sinusoidally gated InGaAs/InP avalanche photodiodes,” The 7th Pacific Rim Conference on Laser and Electro-optics (CLEO/Pacific Rim), PDPA-5, Seoul, Korea (August 26-31, 2007) [contributed talk].
  71. S. Mori, K. Hasegawa, S. Inoue, “Polarization-dependent Enhanced Optical Transmission through One-dimensional Subwavelength Slit Arrays,” The 7th Pacific Rim Conference on Laser and Electro-optics (CLEO/Pacific Rim), ThP_075, Seoul, Korea (2007) [contributed poster].
  72. N. Namekata and S. Inoue, “Afterpulsing-free 80MHz single-photon detection at 1550 nm using an InGaAs/InP avalanche photodiode operated with sinusoidal gating,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC), IC6-2-THU, Munich, Germany (June 17-22, 2007) [contributed talk].
  73. G. Fujii, M. Motoya, N. Namekata, and S. Inoue, “Generation of narrowband photon-pairs in 1550 nm band using Type-II periodically poled lithium niobate waveguide,” The European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC), IF-4-TUE, Munich, Germany (June 17-22, 2007) [contributed poster].
  74. S. Mori, K. Hasegawa, S. Inoue, “Investigation of enhanced optical transmission through single and double subwavelength slits,” The 1st European Topical Meeting on Nanophotonics and Metamaterials, WED4f.21, Tirol, Austria (January 8-11, 2007) [contributed poster].
  75. J. Söderholm, S. Inoue, “Simple Probabilistic Non-Gaussian Operation on Two-Mode Squeezed Vacuum States,” International Conference on Quantum Information (ICQI), JWC51, New York, United States (June 13-15, 2007) [contributed poster].
  76. Y. Takahashi, N. Namekata, J. Söderholm, K. Hirano, S. Machida, S. Inoue, S. Komatsu, S. Kurimura, “Homodyne and photon-counting measurements of squeezed light at 1550 nm,” The 8th International Conference on Quantum communication, measurement and computing, P3-5,Tsukuba, Japan (November 28 – December 3, 2006) [contributed poster].
  77. N. Namekata, S. Sasamori, and S. Inoue, “800MHz Single-Photon Detection at 1550-nm Using an InGaAs/InP Avalanche Photodiode Operated with a Sinusoidal Gating,” European Conference on Optical Communication and CLEO Focus Meeting 2006, We3.P.183, Cannes, France (September 24-28, 2006) [contributed poster].
  78. K. Hirano, Y. Takahashi, N. Namekata, S. Machida, J. Söderholm, and S. Inoue, “Squeezing and Photon-Statistics Measurements of 1550-nm Light Generated by Down-Conversion in Periodically Poled Lithium Niobate,” European Conference on Optical Communication/CLEO Focus Meeting 2006, We3.P.203, Cannes, France (September, 2006) [contributed poster].
  79. N. Namekata, S. Mori, and S. Inoue, “Quantum key distribution over an installed multimode optical fiber local area network,” The Conference on Laser and Electro-Optics and Quantum Electronics and Laser Conference (CLEO/QELS ‘06), JtuH1, Long Beach, United States (May 21-26, 2006) [contributed talk].
  80. K. Hirano, Y. Takahashi, G. Fujii, S. Machida, S. Inoue, S. Komatsu, S. Kurimura, “Generation of femtosecond pulsed squeezed light in optical telecommunication band,” The Conference on Laser and Electro-Optics and Quantum Electronics and Laser Conference (CLEO/QELS ‘06), JTuD86, Long Beach, United States (May 21-26, 2006) [contributed poster].
  81. M. Motoya, S. Kurimura, Y. Kato, Y. Usui, H. Nakajima, S. Inoue,“ Quasi-phase matched Type II parametric down converter with an adhered ridge waveguide,” The 11th Microoptics Conference, H61, Tokyo, Japan (October 30 – November 2, 2005) [contributed poster].
  82. J. Söderholm, K. Hirano, S. Mori, S. Kurimura, and S. Inoue, “Analysis of the generation of photon pairs in periodically poled lithium niobate,” The 8th International Symposium on Foundations of Quantum Mechanics in Light of New Technology, PI-17, Saitama, Japan (August 22-25, 2005) [contributed poster].
  83. N. Namekata, S. Mori, and S. Inoue, “Single-photon source at the telecommunication wavelength using non-degenerate photon-pairs from a periodically poled LiNbO3 waveguide,” The European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference (CLEO/Europe-EQEC ’05), 294, Munich, Germany (June 12-17, 2005) [contributed poster].
  84. S. Mori, N. Namekata and S. Inoue, “Distribution of correlated photon-pairs in the 1550 nm band generated from a periodically poled lithium niobate waveguide,” The European Conference on Lasers and Electro-Optics and European Quantum Electronics Conference (CLEO/Europe-EQEC ’05), 293, Munich, Germany (June 12-17, 2005) [contributed poster].
  85. N. Namekata, and S. Inoue, “High efficiency interaction-free measurements using stabilized a Fabry-Perot cavity”, The 5th Pacific Rim Conference on Lasers and Electro-Optics (CLEO/PR ‘03), F1G(4)-4, Taipei, Taiwan (December 15-19, 2003) [contributed talk].
  86. S. Mori, N. Namekata, and S. Inoue, “Generation of pulsed correlated photon pairs in the 1550 nm band using PPLN waveguide”, The 5th Pacific Rim Conference on Lasers and Electro-Optics (CLEO/PR ‘03), F1G(4)-6, Taipei, Taiwan (December 15-19, 2003) [contributed talk].
  87. N. Namekata, and S. Inoue, “Fiber-optic quantum key distribution at 1550 nm.” ERATO Workshop on Quantum Information Science 2002, P12, Tokyo, Japan (September 4-6, 2002) [contributed poster].
  88. H. Watanabe and S. Inoue, “Experimental demonstration of two-dimensional interaction-free imaging,” the 8th Asian-Pacific Physics Conference, FA-4, Taipei, Taiwan (August 7-10, 2000) [contributed talk].
  89. G. Björk and S. Inoue, “Exposure-free imaging”, Northern Optics 2000, PO17, Uppsala, Sweden, (June 6-8, 2000) [contributed poster].
国内学会発表等（Domestic Conferences）
  1. 行方 直人、小林 伸彰、野村 絢也、佐甲 徳栄、高田 則雄、井上 修一郎、”量子パルスゲートを用いた飛行時間計測による生体断層撮影”　第84回応用物理学会秋季学術講演会, 熊本城ホール, 熊本, 23p-A401-9 (Sep. 19-23, 2023). [Contributed talk]
  2. 行方祥太朗、行方直人、大谷聡、井上修一郎、”周波数安定化レーザーを用いた周波数領域量子ウォークの実装”　第84回応用物理学会秋季学術講演会, 熊本城ホール, 熊本, 21p-P18-12 (Sep. 19-23, 2023). [Contributed poster]
  3. 行方直人, 井上修一郎, “偏波保持ファイバ干渉計を用いた伝令付帯単一光子複製回路,” 第70回応用物理学会春季学術講演会, 上智大学, 四谷, 16p-A405-9 (March 15-20, 2023). [Contributed talk]
  4. 奥山 皓介, 西脇 大輔, 松野 裕, 行方 直人, 井上 修一郎, “機械学習を用いたマルチモードファイバ波長系とそのポアソン強度揺らぎと暗計数に対する耐性,” 第70回応用物理学会春季学術講演会, 上智大学, 四谷, 15p-A202-11, (March 15-20, 2023). [Contributed talk]
  5. 三枝美波, 岸本誠也, 井上修一郎, 大貫進一郎, “波数空間における光パルスの伝搬方向検証,” 2022年電子情報通信学会ソサイエティ大会, C-15-24, オンライン開催, 2022. [Contributed talk]
  6. 小林開人, 岸本誠也, 井上修一郎, 大貫進一郎, “マウス脳簡易モデルにおける光パルス応答解析,” 2022年電子情報通信学会ソサイエティ大会, C-15-16, オンライン開催, 2022. [Contributed talk]
  7. 井上修一郎，萩原広揮，行方直人, “単一光子単一画素イメージング,” レーザー学会学術講演会第42回年次大会, (Jan. 12~14 2022)[Invited talk]
  8. 三枝美波, 中沢 佑,  岸本 誠也,  井上 修一郎,  大貫 進一郎, “大規模楕円柱列モデルにおける光パルス反射特性,” 2021年電子情報通信学会ソサイエティ大会, C-15-5, オンライン開催, 2021.
  9. 岸本誠也, 三枝美波, 井上修一郎, 大貫進一郎, “FDTD法による生体内光パルス伝搬解析の基礎検討,” 2021年電子情報通信学会総合大会, C-15-15, オンライン開催, 2021.
  10. 三枝美波, 岸本誠也, 井上修一郎, 大貫進一郎，“FDTD法による細胞内光パルス反射光解析の基礎検討”，電子情報通信学会 東京支部学生会 第26回研究発表会，91, オンライン開催, 2021.
  11. 浜島功，呉迪 ，岸本誠也 ，井上修一郎，大貫進一郎，“FDFD法によるプラズモニック導波路の解析 ～グレーティング構造部の金薄膜変化による結合損失表面プラズモンのモード特性検証 ～” 2020電子情報通信学会総合大会，C-15-4，広島大学，2020．
  12. 萩原広揮, 横田一広, 行方直人, 井上修一郎, “極微弱光・量子光を用いた単一画素圧縮イメージングの検討”　第80回応用物理学会秋季学術講演会, 北海道大学, 19p-E319-1 (9.18-21. 2019).[Contributed talk]
  13. 中拓也, 小林稜, 行方 直人, 福田大治 ,井上修一郎, “長距離伝搬型プラズモンポラリトン導波路の液体窒素温度における伝播損失評価,” 第66 回応用物理学会春季学術講演会, 東京工業大学, 11p-PB1-31, (2019. 3.9-12). [Contributed poster]
  14. 小林稜, 中拓也, 多田彬子, 行方直人, 福田大治, 井上修一郎, “量子ウォークシミュレーターのための恭距離伝播型表面プラズモンポラリトンカプラの評価,” 第66回応用物理学会春季学術講演会, 東京工業大学, 10p-S422-9, (2019. 3.9-12). [Contributed talk]
  15. 浜島功, 呉迪, 岸本誠也, 井上修一郎, 大貫進一郎, “グレーティング構造を用いた長距離伝搬プラズモン解析の基礎検証,” 2019年電子情報通信学会エレクトロニクスソサイエティ大会, C-15-23, 大阪大学, 2019.
  16. 呉迪, 井上修一郎, 大貫進一郎, “量子ウォークの実現に向けたプラズモニック導波路アレイの基礎検討,” 2019年電子情報通信学会エレクトロニクスソサイエティ大会, C-1-3, 大阪大学, 2019.
  17. 中拓也, 小林稜, 行方 直人, 福田大治 ,井上修一郎, “長距離伝搬型プラズモンポラリトン導波路の液体窒素温度における伝播損失評価,” 第66 回応用物理学会春季学術講演会, 東京工業大学, 11p-PB1-31, (2019. 3.9-12). [Contributed poster]
  18. 小林稜, 中拓也, 多田彬子, 行方直人, 福田大治, 井上修一郎, “量子ウォークシミュレーターのための恭距離伝播型表面プラズモンポラリトンカプラの評価,” 第66回応用物理学会春季学術講演会, 東京工業大学, 10p-S422-9, (2019. 3.9-12). [Contributed talk]
  19. 小林稜, 中拓也, 行方直人, 福田大治, 井上修一郎, “連続時間量子ウォークシミュレーターに向けたプラズモン導波路カプラの評価,” 日本光学会ナノオプティクス研究会グループ第25回研究討論会, 徳島大学, (2018.11.20-21). [Contributed talk]
  20. 多田彬子, 行方直人, 井上修一郎, “10GHz繰り返し励起レーザを用いた伝令付き単一光子源,” 第79回応用物理学会秋季学術講演会, 名古屋国際会議場, 19a-PA5-2 (2018. 9.18-21). [Contributed poster]
  21. 小林稜, 中拓也, 藤井剛, 行方直人, 福田大治, 井上修一郎, “連続時間量子ウォークシミュレーターに向けたプラズモン導波路カプラの試作”, 第79回応用物理学会秋季学術講演会, 名古屋国際会議場, 19p-PA7-14 (2018. 9.18-21). [Contributed poster]
  22. 服部香里, 丹羽一樹, 沼田孝之, 小林稜, 鷹巣幸子, 井上修一郎, 福田大治, “可視光用超伝導転移端センサの応答特性,” 第79回応用物理学会秋季学術講演会, 名古屋国際会議場, 20p-212B-6 (2018. 9.18-21). [Contributed talk]
  23. 小林稜, 服部香里, 中田直樹, 鷹巣幸子, 丹羽一樹, 井上修一郎, 福田大治, “光ファイバー自己整合構造を用いた超伝導転移端センサアレイの開発,” 第79回応用物理学会秋季学術講演会, 名古屋国際会議場, 20p-212B-7 (2018. 9.18-21). [Contributed talk]
  24. 中拓也、行方 直人、井上 修一郎, “線引き法によるAu埋め込みガラスファイバの試作,” 第65 回応用物理学会春季学術講演会, 早稲田大学, 18-P9-12, (2018. 3.17-20). [Contributed poster]
  25. 服部香里, 小林稜, 丹羽一樹, 沼田孝之, 井上修一郎, 福田大治, “可視光用超伝導転移端センサの検出効率波長依存性評価,” 第65 回応用物理学会春季学術講演会, 早稲田大学, 19-B303-1, (2018. 3.17-20). [Contributed talk]
  26.  

特許（Patents）

  1. 光通信波長帯における高速パルス型ホモダイン検波器（出願番号：2008-247073）
  2. High-speed single-photon detector in telecommunication wavelength band　(U.S. Patent Number : 7705284 B2)
  3. 偏光エンタングルド光子対発生装置（出願番号：2004-071909，日本登録番号：4264735）
  4. 単一光子発生装置（出願番号：2003-117055，英国登録番号：GB2419248）
  5. 長距離量子暗号システム（出願番号：2002-091578，日本登録番号：4086136）

公的外部獲得研究費　（Research Grants）

  1. 行方直人（研究代表者）, “周波数安定化レーザーを用いた境界を有する光周波数領域量子ウォークシミュレータの実装,” 松尾学術振興財団　第36回松尾学術研究助成 (2023-2024).
  2. 井上修一郎(研究代表), 行方直人(研究分担者), “量子パルスゲートによる極限微弱光を用いた生体断層撮影技術の創成,” 科学研究費補助金(挑戦的研究・開拓),(2021-継続中) .
  3. 井上修一郎(研究代表), 行方直人(研究分担者), “超広帯域量子もつれ光子対と超伝導転移端センサによる単一光子単一画素イメージング,” 科学研究費補助金　基盤研究　B (2019-2021) .
  4. 井上修一郎(共同研究者), 行方直人(共同研究者), “光子数識別量子ナノフォトニクスの創成,” 光・量子フラッグシッププログラム(基礎基盤研究), (2018-2022).
  5. 井上修一郎(研究代表), 行方直人(研究分担者), “プラズモニック量子デバイスの開発とその量子ウォークへの応用,” 科学研究費補助金(新学術領域, 公募) (2018-2020) .
  6. 行方直人(研究代表), “ストレートフォワード型多光子干渉回路を用いた光量子シミュレータの開発,” 科学研究費補助金 基盤研究C (2017-2020).
  7. 行方直人(研究代表), “正弦電圧ゲート動作型シリコン雪崩フォトダイオードによる光検出に関する研究,” 科学研究費補助金　基盤研究C　(2014-2017)
  8. 行方直人(研究代表), “化合物半導体光子検出器による高忠実度偏光量子もつれ交換技術に関する研究,” 文科省科学研究費補助金 若手研究B (2011-2013).
  9. 行方直人(研究代表),「通信波長帯用ギガヘルツ繰り返し単一光子検出器の開発と量子鍵配布への応用」文科省科学研究助成金 若手研究B (2009-2011).
  10. 井上修一郎（研究代表者）, “超伝導光子検出器による量子もつれ波長多重量子暗号通信技術に関する研究,”, 総務省戦略的情報通信研究開発推進制度 (SCOPE)(2010-2012).
  11. 井上修一郎, “通信波長帯において多光子エンタングルド状態を生成し、量子情報通信への応用実験を行う,” 科学研究費補助金　外国人特別研究員奨励費 (2005-2007).
  12. 井上修一郎(研究分担者), “光ファイバー通信波長帯量子ドットを用いた高次機能光子源の研究,” 科学研究費補助金　特定領域研究 (2005-2008).
  13. 井上修一郎 (研究代表者) , “光通信波長帯量子制御光変復調技術の研究開発,” 情報通信研究機構　委託研究, (2004-2008).
  14. 井上修一郎（研究代表者）, “無相互作用イメージング－量子カメラの製作,” 科学研究費補助金　基盤研究Ｃ（２）(2001-2002).
  15. 井上修一郎（研究代表者）, “偏光干渉計を用いた量子暗号システムの開発,” 大川情報通信基金　（2000-2001）.