量子情報：北海道大学大学院情報科学研究科情報エレクトロニクス専攻先端エレクトロニクス講座

• Ken-ichiro Yoshino, Mikio Fujiwara, Akihiro Tanaka, Seigo Takahashi, Yoshihiro Nambu, Akihisa Tomita, Shigehito Miki, Taro Yamashita, Zhen Wang, Masahide Sasaki, and Akio Tajima
  "High-speed wavelength-division multiplexing quantum key distribution system," Optics Letters 37 (2), pp. 223-225 (2012).

• K.-I. Kitayama, M. Sasaki, S. Araki, M. Tsubokawa, A.Tomita, K. Inoue, K. Harasawa, Y. Nagasako, and A. Takada "Security in Photonic Networks: Threats and Security Enhancement" J. Lightwave Technology 29, (21) 3210-3222 (2011).
• Yoshihiro Nambu, Seigo Takahashi, Ken-ichiro Yoshino, Akihiro Tanaka, Mikio Fujiwara, Masahide Sasaki, Akio Tajima, Shin-ichi Yorozu, and Akihisa Tomita, "Efficient and low-noise single-photon avalanche photodiode for 1.244-GHz clocked quantum key distribution" Opt. Express 19, (21) 20531-20541 (2011).
• Mikio Fujiwara, Akihiro Tanaka, Seigo Takahashi, Ken-ichiro Yoshino, Yoshihiro Nambu, Akio Tajima, Shigehito Miki, Taro Yamashita, Zeng Wang,Akihisa Tomita, Masahide Sasaki, "Afterpulse-like phenomenon of superconducting single photon detector in high speed quantum key distribution system" Opt. Express 19, (20) 19562-19571 (2011).
• M. Sasaki, M. Fujiwara, H. Ishizuka, W. Klaus, K. Wakui, M. Takeoka, S. Miki, T. Yamashita, Z. Wang, A. Tanaka, K. Yoshino, Y. Nambu, S. Takahashi, A. Tajima, A. Tomita, T. Domeki, T. Hasegawa, Y. Sakai, H. Kobayashi, T. Asai, K. Shimizu, T. Tokura, T. Tsurumaru, M. Matsui, T. Honjo, K. Tamaki, H. Takesue, Y. Tokura, J. F. Dynes, A. R. Dixon, A. W. Sharpe, Z. L. Yuan, A. J. Shields, S. Uchikoga, M. Legre', S. Robyr, P. Trinkler, L. Monat, J.-B. Page, G. Ribordy, A. Poppe, A. Allacher, O. Maurhart, T. La"nger, M. Peev, and A. Zeilinger,
  "Field test of quantum key distribution in the Tokyo QKD Network," Opt. Express 19, (11) 10387-10409 (2011).

• Kazuya Takemoto, Yoshihiro Nambu, Toshiyuki Miyazawa, Kentaro Wakui, Shinichi Hirose, Tatsuya Usuki, Motomu Takatsu, Naoki Yokoyama, Ken’ichiro Yoshino, Akihisa Tomita, Shinichi Yorozu, Yoshiki Sakuma, and Yasuhiko Arakawa,
  "Transmission Experiment of Quantum Keys over 50km Using High-Performance Quantum-Dot Single-Photon Source at 1.5 um Wavelength," Appl. Phys. Express 3 (9), 092802 (2010).

• Mikio Fujiwara, Morio Toyoshima, Masahide Sasaki, Ken-ichiro Yoshino, Yoshihiro Nambu, and Akihisa Tomita,
  "Performance of hybrid entanglement photon pair source for quantum key distribution," Appl. Phys. Lett. 57, 261103 (2009).
• Akihiro Tanaka, Wakako Maeda, Seigo Takahashi, Akio Tajima, and Akihisa Tomita,
  "Ensuring quality of shared keys through quantum key distribution for practical application," IEEE J. Selected Topics in Quantum Electron. 15 (6), pp. 1622-1629 (2009).
• Kunihiro Kojima and Akihisa Tomita,
  "Photon-arrival detector with a controlled phase flip operation between a photon and a V-type atomic system," J. Opt. Soc. Am. B 26 (4), pp. 836-848 (2009).

• Masahito Hayashi, Akihisa Tomita, and Keiji Matsumoto,
  "Statistical analysis of testing of an entangled state based on a Poissonian distribution framework," New J. Phys. 10, 043029 (2008).
• Yuta Okubo, Xiang-Bin Wang, Yun-Kun Jiang, Seiichiro Tani, and Akihisa Tomita,
  "Experimental demonstration of quantum leader election in linear optics," Phys. Rev. A 77, 032343 (2008).
• Yoshihiro Nambu, Ken'ichiro Yoshino, Akihisa Tomita,
  "Quantum encoder and decoder for practical quantum key distribution using a planar lightwave circuit," J. Mod. Optics 55, (12) pp. 1953-1970 (2008).
• Akihiro Tanaka, Mikio Fujiwara, Sae W. Nam, Yoshihiro Nambu, Seigo Takahashi, Wakako Maeda, Ken-ichiro Yoshino, Shigehito Miki, Burm Baek, Zhen Wang, Akio Tajima, Masahide Sasaki, and Akihisa Tomita,
  "Ultra fast quantum key distribution over a 97 km installed telecom fiber with wavelength division multiplexing clock synchronization," Optics Express 16 (15), pp. 11354-11360 (2008).

• Kunihiro Kojima and Akihisa Tomita,
  "Quantum-nondemolition measurement of photon-arrival using an atom-cavity system," Phys. Rev. A 75, 032320 (2007).
• Yun-Kun Jiang, and Akihisa Tomita,
  "Generation of Polarization-entangled Photon Pairs Using Periodically Poled Lithium Niobate Waveguides in a Fiber Loop," J. Phys. B 40, pp. 437-443 (2007).
• Masayuki Shirane, Shunsuke Kono, Jun Ushida, Shunsuke Ohkouchi, Naoki Ikeda, Yoshimasa Sugimoto, and Akihisa Tomita,
  "Mode identification of high-quality-factor single-defect nanocavities in quantum dot-embedded photonic crystals," J. Appl. Phys. 101, 073107 (2007).
• J. Li, Y.-K. Jaing, and A. Tomita,
  "Measurement of the off-diagonal geometric phase of a mixed-state photon via a Franson interferometer," Phys. Lett. A 362 (4), pp. 269-272 (2007).
• Akio Tajima, Akihiro Tanaka, Wakako Maeda, Seigo Takahashi, and Akihisa Tomita,
  "Practical Quantum Cryptosystem for Metro Area Applications," IEEE J. Selected Topics in Quantum Electronics 13(4), pp. 1031-1038 (2007).
• Bao-Sen Shi, Chang Zhai, Guang-Can Guo, Yun-Kun Jiang and Akihisa Tomita,
  "Efficient generation of a photon pair in a bulk periodically poled potassium titanyl phosphate," Optics Commun. 278, pp. 363-367 (2007).

• Achanta Venu Gopal, Akihisa Tomita, Sheng Lan, Hirohito Yamada and Jun Ushida,
  "High Quality Factor Photonic Crystal Micro-Cavity Design to Utilize Semiconductor Nonlinearities," Jpn. J. Appl. Phys. 45, No. 3A, pp. 1612-1616 (2006).
• Bao-Sen Shi, and Akihisa Tomita,
  "Time uncertainty of a photon pair creation in a bulk periodically poled potassium titanyl phosphate pumped by a femtosecond laser," New Journal of Physics 8, 38 (2006).
• Bao-Sen Shi, and Akihisa Tomita,
  "Four photons interfering but showing the two-photon interference behaviour," J. Modern Optics, 53 (7), pp. 1003-1009 (2006).
• Kunihiro Kojima and Akihisa Tomita,
  "Influence of pure-dephasing by phonons on exciton-photon interface," Phys. Rev. B 73, 195312 (2006).
• Yoshihiro Nambu, Ken'ichiro Yoshino, and Akihisa Tomita,
  "One-way quantum key distribution system based on planar lightwave circuits," Jpn. J. Appl. Phys. 45, (6A) pp. 5344-5348 (2006).
• Akihiro Kirihara, Shunsuke Kono, Akihisa Tomita, Kazuo Nakamura,
  "Development of near-field optical scanning microscope working under cryogenic temperature and strong magnetic field," Optical Review 13, (4) pp. 279-282 (2006).
• Masahito Hayashi, Bao-Sen Shi, Akihisa Tomita, Keiji Matsumoto, Yoshiyuki Tsuda, and Yun-Kun Jiang,
  "Hypothesis testing for an entangled state produced by spontaneous parametric down-conversion," Phys. Rev. A74, 062321 (2006).
• Yun-Kun Jiang, and Akihisa Tomita,
  "Highly efficient polarization entangled-photon source from Periodically Poled Lithium Niobate wavegides," Optics Commun. 267, pp. 278-281 (2006).

• Akihisa Tomita,
  "Quantum Information Processing with Fiber Optics: Quantum Fourier Transform of 1024 Qubits," Optika i Spektroskopiya 99, (2) pp. 219-225 (2005).
• Bao-Sen Shi and Akihisa Tomita,
  "Creation of a polarization W state using optical fibre multiports," J. Mod. Optics, 52, (5), pp. 755-761 (2005).
• Shunsuke Kono, Akihiro Kirihara, Akihisa Tomita, Kazuo Nakamura, Junichi Fujikata, Hideaki Saito, and Kenichi Nishi,
  " Excitonic molecule in a quantum dot: Photoluminescence lifetime measurement of an InAs/GaAs single quantum dot," Phys. Rev. B 72, 155307 (2005).
• Achanta Venu Gopal, Akihisa Tomita, Hirohito Yamada, and Sheng Lan,
  "Temporal behaviour of field in high quality factor photonic crystal microcavity structure," Optics Express 13, (2) pp. 460-467 (2005).
• Yun-Kun Jiang, Xiang-Bin Wang, Bao-Sen Shi, and Akihisa Tomita,
  "Experimental verification of fault tolerant quantum key distribution protocol," Optics Express, 13, pp. 9415-9421 (2005).

• Akihisa Tomita and Kazuo Nakamura,
  "Measured Quantum Fourier Transform of 1024 Qubits on Fiber Optics," Int. J. Quantum Information 2 pp. 119-131 (2004).
• Bao-Sen Shi and Akihisa Tomita,
  "Generation of a pulsed polarization entangled photon pair using a Sagnac interferometer," Phys. Rev. A 69, 013803 (2004).
• Xiang-Bin Wang, Bao-Sen. Shi, Akihisa Tomita, and Keiji Matsumoto,
  "Quantum entanglement swapping with spontaneous parametric down-conversion," Phys. Rev. A 69, 014303 (2004).
• Koji Usami, Akihisa Tomita, Kazuo Nakamura,
  "Antinormally ordered photodetection of continuous-mode field," Int. J. Quantum Information, 2, (1) pp.101-117 (2004).
• Bao-Sen Shi and Akihisa Tomita,
  "Highly efficient generation of pulsed photon pairs with bulk periodically poled potassium titanyl phosphate," J. Opt. Soc. Am. B 21, (12), pp. 2081-2084 (2004).
• Koji Usami, Yoshihiro Nambu, Bao-Sen Shi, Akihisa Tomita, and Kazuo Nakamura,
  "Observation of Antinormally Ordered Hanbury Brown-Twiss Correlations," Phys. Rev. Lett. 92, 113601 (2004).
• Bao-Sen Shi and Akihisa Tomita,
  "Preparation of a pulsed polarization entangled photon pair via interference," Optics Commun. 235, pp. 247-252 (2004).
• Tadamasa Kimura, Yoshihiro Nambu, Takaaki Hatanaka, Akihisa Tomita, Hideo Kosaka and Kazuo Nakamura,
  "Single-photon Interference over 150km Transmission Using Silica-based Integrated-optic Interferometers for Quantum Cryptography," Jpn. J. Appl. Phys. 43, No.9A/B pp. L 1217-L 1219 (2004).

• Bao-Sen Shi and Akihisa Tomita,
  "Generation of a pulsed polarization entangled-photon pair via a two-crystal geometry," Phys. Rev. A 67, 043804 (2003).
• Hideo Kosaka, Akihisa Tomita, Yoshihiro Nambu, Tadamasa Kimura, and Kazuo Nakamura,
  "Single-photon interference experiment over 100 km for quantum cryptography system using a balanced gated-mode photon detector," Electron. Lett. 39, (16), pp. 1199-1201 (2003).

• Bao-Sen Shi and Akihisa Tomita,
  "Remote state preparation of an entangled state," J. Opt. B 4 pp. 380-382 (2002).
• Bao-Sen Shi and Akihisa Tomita,
  "Teleportation of an unknown state by W state," Phys. Lett., A296 pp. 161-164 (2002).
• Akihisa Tomita and Kazuo Nakamura,
  "Balanced, gated-mode photon detector for qubit discrimination at 1550 nm," Optics Letters 27 pp. 1827-1829 (2002).

• Akihisa Tomita,
  "Complete Bell state measurement with a solid state device," Phys. Lett. A 282 pp. 331-335 (2001).
• Xiangbin Wang, Keiji Matsumoto, Akihisa Tomita,
  "Detecting the inseparability and distillability of continuous variable states in Fock space", Phys. Rev. Lett., 87, 137903 (2001).

• Akihisa Tomita and Osamu Hirota,
  "Security of the classical noise-based cryptography," J. Optics B2 pp. 705-710 (2000).
• Masatoshi Tokushima, Hideo Kosaka, Akihisa Tomita, and Hirohito Yamada,
  "Triple-Exposure Method for Fabricating Triangular-Lattice Photonic Crystals," Jpn. J. Appl. Phys. 39 pp. 4236-4240 (2000).
• Yoshihiro Nambu, Akihisa Tomita, Yoshie Chiba-Kohno, Kazuo Nakamura,
  "Quantum Key Distribution Using Two Coherent States of Light and Their Superposition," Phys. Rev. A62 012312 (2000).
• Hideo Kosaka, A. Tomita, T. Kawashima, T. Sato, and S. Kawakami,
  "Splitting of triply degenerate refractive indices by photonic crystals," Phys. Rev. B62, pp. 1477-1480 (2000).
• Hideo Kosaka, T. Kawashima, A. Tomita, T. Sato, and S. Kawakami,
  "Photonic-crystal spot-size converter," Appl. Phys. Lett. 76, pp. 268-270 (2000).
• Masatoshi Tokushima, Hideo Kosaka, Akihisa Tomita, and Hirohito Yamada,
  "Lightwave propagation through a 120° sharply bent single-line-defect photonic crystal waveguide," Appl. Phys. Lett. 76,　pp. 952-954 (2000).

• Yoshihiro. Nambu, A. Tomita, H. Saito, and K. Nishi,
  "Effects of spectral broadening and cross relaxation on the gain saturation characteristics of quantum dot laser amplifiers," Jpn. J. Appl. Phys., 38, pp. 5087-5095 (1999).
• Hideo Kosaka, T. Kawashima, A. Tomita, M. Notomi, T. Tamamura, T. Sato, and S. Kawakami,
  "Superprism phenomena in photonic crystals: Toward micro-scale lightwave circuits," J. Lightwave Technol., 17, pp. 2032-2038 (1999).
• Hideo Kosaka, T. Kawashima, A. Tomita, M. Notomi, T. Tamamura, T. Sato, and S. Kawakami,
  "Photonic crystals for micro lightwave circuits using wavelength-dependent angular beam steering," Appl. Phys. Lett., 74, pp. 1370-1372 (1999).
• Hideo Kosaka, T. Kawashima, A. Tomita, M. Notomi, T. Tamamura, T. Sato, and S. Kawakami,
  "Self-collimating phenomena in photonic crystals," Appl. Phys. Lett., 74, pp. 1212-1214 (1999).
• Hideo Kosaka, T. Kawashima, A. Tomita, M. Notomi, T. Tamamura, T. Sato, and S. Kawakami,
  "Superprism phenomena in photonic crystals," Phys. Rev., B58, pp. R10096-R10099 (1998).
• T. Anan, K. Nishi, A. Tomita, K. Tokutome, and S. Sugou,
  "Conduction-band discontinuity in InAsP/InP heterojunction," Jpn. J. Appl. Phys. 37 pp. 3915-3918 (1998).
• H. Yamazaki, A. Tomita, M. Yamaguchi, and Y. Sasaki,
  "Evidence of non-uniform carrier distribution in multiple quantum well lasers," Appl. Phys. Lett., 71 pp. 767-769 (1997).
• Akihisa Tomita,
  "Quantum-classical crossover in carrier transport," Phys. Lett. A 233 pp. 115-120 (1997).
• Akihisa Tomita,
  "Many body effects, space charge potential, and valence band mixing on the optical gain in quantum well structures," Phys. Rev., B54, pp. 5609-5619 (1996).
• Akihisa Tomita, Jagdeep Shah, and Robert S. Knox,
  "Efficient exciton energy transfer between widely separated quantum well structures," Phys. Rev., B53, pp. 10793-10803 (1996).
• Akihisa Tomita,
  "A proposal of step barrier structures to reduce hole localization in multiple quantum well structures," J. Appl. Phys., 77 pp. 2029-2031 (1995).

• Yoshihiro Nambu and Akihisa Tomita,
  "Spectral hole burning and carrier-heating effect on the transient optical nonlinearity of highly carrier-injected semiconductors," IEEE J. Quantum Electron., 30, pp. 1981-1994 (1994).
• Akihisa Tomita,
  "Free carrier effect on the refractive index change in quantum well structures," IEEE J. Quantum Electron., 30, pp. 2798-2802 (1994).
• Akihisa Tomita, Jagdeep Shah, J.E. Cunningham, Steven M. Goodnick, P. Lugli, and S.L. Chuang,
  "Femtosecond dynamics of non-thermal holes in n-type modulation-doped quantum wells," Semicond. Sci. Technol. 9, pp. 449-452 (1994).
• Shigeru Murata, Akihisa Tomita, and Akira Suzuki,
  "Influence of free carrier plasma effect on carrier-induced refractive index change for quantum well lasers," IEEE Photonics Technol. Lett., 5 pp. 16-19 (1993).
• Jun'ichi Shimizu, Akitaka Kimura, Koichi Naniwae, Masaaki Nido, Shigeru Murata, Akihisa Tomita, and Akira Suzuki,
  "Strain effect on K factor, differential gain and nonlinear gain coefficient for InGaAs/InGaAsP strained multiquantum well lasers," Electron. Lett., 29, pp. 579-580 (1993).
• Akihisa Tomita, Jagdeep Shah, J.E. Cunningham, S.M. Goodnick, P. Lugli, and S.L. Chuang,
  "Femtosecond hole relaxation in n-type modulation-doped quantum wells," Phys. Rev. B48, pp. R5708-R5711 (1993).
• Shigeru Murata, Koichi Naniwae, Jun'ichi Shimizu, Masaaki Nido, Akihisa Tomita, and Akira Suzuki,
  "High-frequency modulation characteristics in 1.5 μm compressively strained multiquantum well lasers with large number of wells," Electron. Lett., 28, pp. 1456-1457 (1992).
• Akihisa Tomita,
  "Dependence of nonlinear gain effect on threshold gain in semiconductor lasers-an optimization for high-speed modulation," IEEE Photonics Technol. Lett., 4, pp. 342-345 (1992).
• Shigeru Murata, Akihisa Tomita, Jun'ichi Shimizu, and Akira Suzuki,
  "THz optical frequency conversion of 1Gb/s signals using highly nondegenerate four wave mixing in semiconductor lasers," IEEE Photonics Technol. Lett., 3, pp. 1021-1023 (1991).
• Jun'ichi Shimizu, Hirohito Yamada, Shigeru Murata, Akihisa Tomita, and Mitsuhiro Kitamura,
  "Optical confinement factor dependence of K-factor, differential gain, and nonlinear gain coefficient in 1.55 μm InGaAs/InGaAsP MQW and strained MQW lasers," IEEE Photonics Technol. Lett., 3, pp. 773-776 (1991).
• Shigeru Murata, Akihisa Tomita, Junichi Shimizu, Mitsuhiro Kitamura, and Akira Suzuki,
  "Observation of highly nondegenerate four-wave mixing (>1THz) in an InGaAsP multiple quantum well laser," Appl. Phys. Lett., 58 pp. 1458-1460 (1991).
• Akihisa Tomita and Akira Suzuki,
  "A New Density Matrix Theory on Semiconductor Lasers, Including Non-Markoffian Intraband Relaxation and Its Application to Nonlinear Gain," IEEE J. Quantum Electron., 27, pp. 1630-1641 (1991).

• Akihisa Tomita, Yuji Kohga, and Akira Suzuki, Tomoji Terakado, and Akira Ajisawa,
  "5:1 on-off contrast InGaAs/InP multiple quantum well Fabry-Perot etalon modulator," Appl. Phys. Lett., 55, pp. 1817-1819 (1989).
• Akihisa Tomita, Akira Suzuki and Keiro Komatsu,
  "Dispersive-type optical bistability in a self-electrooptic-effect etalon," Jpn. J. Appl. Phys., 28, pp. 1523-1524 (1989).
• Akihisa Tomita, and Akira Suzuki,
  "Optical feedback effect on bistable laser diodes," Optical and Quantum Electron., 19, pp. S75-S82 (1987).
• Akihisa Tomita, and Akira Suzuki,
  "Carrier induced wavelength shift for quantum well laser diodes," IEEE J. Quantum Electron., QE23, pp. 1155-1159 (1987).
• Akihisa Tomita, Tomoji Terakado, and Akira Suzuki,
  "Turn-off characteristics of bistable laser diodes," J. Appl. Phys., 59, pp. 1839-1842 (1986).

• Mikio Fujiwara, Morio Toyoshima and Masahide Sasaki, Ken-ichiro Yoshino, Yoshihiro Nambu, and Akihisa Tomita, "Hybrid Entanglement Photon Pair Source for Fiber-Space Flexble QKD Network" IEEE International Conference on Space Optical Systems and Applications (ICSOS), Santa Monica, CA, USA, May 11-13, 2011.
• Kenji Tsujino and Akihisa Tomita, "High-Photon-Detection-Efficiency Silicon Avalanche Photodiode with Charge-Sensitive Amplifier" ED3.2-THU, The European Conference on Lasers and Electro-Optics and the XIIth European Quantum Electronics Conference (CLEO /Europe-EQEC 2011,) Munich, Germany, May 22-26, 2011.

• Tsujino, K.; Miyamoto, Y.; Kataoka, J.; Tomita, A., "Expreimental demonstration of photon detector based on InGaAs avalanche photodiode with sub-Geiger mode operation ", The Tenth International Conference on Quantum Communication, Measurement and Computation (QCMC), Brisbane, Queensland, Australia, July 17-23, 2010
• Kenji Tsujino and Akihisa Tomita,Tsujino, K.; Tomita, A., "Sub-Geiger Mode Silicon Avalanche Photodiode: Toward High Detection Efficiency, " 10th Asian Conference on Quantum Information Science(AQIS'10), The University of Tokyo, Tokyo, Aug.27-31, 2010.
• Tsujino, K.; Miyamoto, Y.; Kataoka, J.; Tomita, A., "Phonton Counter Based on Avalanche Photodiode Operating In Sub-Geiger Mode," Updating Quantum Cryptography and Communications 2010(UQCC 2010), Tokyo, Oct. 18-20, 2010 .
• Hasegawa, J.; Tanaka, A.; Tomita, A.; Yorozu, S., "Experimental Demonstration of Intercept-Resend Attack with Time Fluctuation of Quantum Devices on QKD, " Updating Quantum Cryptography and Communications 2010(UQCC 2010), Tokyo, Oct. 18-20, 2010 .
• Tomita, A.; Tajima, A.; Tanaka, A..; Yoshino, K.; Nambu, Y.; Takahashi, S.; Yorozu, S., " High-speed Quantum Key Distribution System for Metropolitan Networks," Updating Quantum Cryptography and Communications 2010(UQCC 2010), Tokyo, Oct. 18-20, 2010.

• Akihiro Tanaka, Akihisa Tomita, and Akio Tajima, "Colourless interferometric technique for large capacity quantum key distribution system by use of wavelength division multiplexing," 35th European Conference on Optical Communication (ECOC), Vienna, Austria, paper 1.4.2, Sept. 20-24 (2009).
• Kenji Tsujino and Akihisa Tomita, "Positive operator valued measure for a practical single-photon avalanche diode," The 9th Asian Conference on Quantum Information Science (AQIS09), Nanjing, China, Aug. 26-29 (2009).
• Jun Hasegawa, Akihiro Tanaka, and Akihisa Tomita, "Experimental demonstration of intersept-resend attack with fluctuation of quantum devices on quantum key distribution," The 9th Asian Conference on Quantum Information Science (AQIS09), Nanjing, China, Aug. 26-29 (2009).

• Kunihiro Kojima and Akihisa Tomita, "Quantum information transfer between a photon and a V-type atomic system," The 8th Asian Conference on Quantum Information Science (AQIS08), Seoul, Korea, Aug. 27-30 (2008).
• Yuta Okuba, Francesco Buscemi, Akihisa Tomita, "Proposal of an eavesdropping experiment for BB84 QKD protocol with linear optical 1-3phase-covariant cloner," The 9th International Conference on Quantum Communication, Measurement and Computing (QCMC) Calgary, Canada, Aug. 19-24 (2008.)
• A. Tanaka, M. Fujiwara, S.-W. Nam, Y. Nambu, S. Takahashi, W. Maeda, K. Yoshino, S. Miki, B. Beak, W. Zhen, A. Tajima, A. Tomita, and M. Sasaki, "97km QKD field trial using PLC-based one-way interferometers, SSPDs, and WDM synchronization," OFC/NFOEC 2008, San Diego, CA, USA (2008)

• Seigo Takahashi, Akio Tajima, and Akihisa Tomita, "A High Efficiency Single Photon Detector Combined with an Ultra-Small APD Module and a Self-Training Discriminator for High-Speed Quantum Cryptosystem," 13th Microooptics Conference, Takamatsu, Japan, PD-1, pp.2-3 (2007).
• Ken-ichiro Yoshino, Akihiro Tanaka, Yoshihiro Nambu, Akio Tajima, and Akihisa Tomita, "Dual-mode Time-bin Coding for Quantum Key Distribution Using Dual-drive Mach-Zehnder Modulator," 32nd European Conference on Optical Communication (ECOC), Berlin, Germany (2007).
• Yuta Okubo, Xiang-Bin Wang, and Akihisa Tomita, "Experimental demonstration of quantum leader election in linear optics," Frontiers in Optics 2007, San Jose, CA, USA (2007).
• Jun Hasegawa, Masahito Hayashi, Tohya Hiroshima, and Akihisa Tomita, "Security analysis and experiment of decoy state quantum key distribution incorporating finite statics," 8th Asian Conference of Quantum Information Science, Kyoto (2007).
• Shunsuke Kono, Masayuki Shirane, Naoki Ikeda, Yoshimasa Sugimoto, Shunsuke Ohkouchi, and Akihisa Tomita, "Coherent control of InAs/GaAs single quantum dots," International Quantum Electronics Conference (IQEC), Munich, Germany (2007).
• Akihiro Kirihara, Shunsuke Ohkouchi, Junichi Fujikata, Shunsuke Kono, Akihisa Tomita, and Shinichi Yorozu, "Optical spectroscopy of charge-tunable quantum dots emitting at 1.2 um," International Quantum Electronics Conference (IQEC), Munich, Germany (2007).
• Masayuki Shirane, Shunsuke Kono, Jun Ushida, Shunsuke Ohkouchi, Akihisa Tomita, Naoki Ikeda, and Yoshimasa Sugimoto, "Mode Identification of High-Q Single-defect Nanocavities in Quantum Dot-embedded Photonic Crystals," Int Symp on Photonic & Electromagnetic Crystal Structures (PECS) , Montley, USA (2007).

• Kunihiro Kojima and Akihisa Tomita, "Proposal for QND-measurement of phonton-arrival with an atom-cavity system," The 8th International Conference on Quantum Communication, Measurement and Computing (QCMC), Tsukuba, (2006)
• Akihiro Tanaka, Akihisa Tomita, Wakako Maeda, Seigo Takahashi, and Akio Tajima, "Decoy-State Design for use in a High-Speed QKD," 8th International conference on quantum communication, measurement and computing (QCMC), Tsukuba, Japan (2006).
• Yoshihiro Nambu, Ken'ichiro Yoshino, Akihisa Tomita, "Quantum key distribution systems without optical switching using planar lightwave circuit," 8th International conference on quantum communication, measurement and computing (QCMC), Tsukuba, Japan (2006).
• Akihiro Tanaka, Akihisa Tomita, Wakako Maeda, Seigo Takahashi, Akio Tajima, "Realizing Decoy State on a High-Speed Quantum Cryptosystem," 31st European Conference on Optical Communication (ECOC), Cannes, France We3.P.186 (2006).
• Yun-Kun Jiang, Jian Li, and Akihisa Tomita, "Off-diagonal geometric phase for mixed states in experiment of Franson interferometer," Asian Conference of Quantum Information Science 2006 (AQIS), Beijing, China (2006).
• Yun-Kun Jiang and Akihisa Tomita, "Generation of Polarization-entangled Photon Pairs Using Periodically Poled Lithium Niobate Waveguides in a Fiber Loop," The Conference on Lasers and Electro-Optics (CLEO), Long Beach, California, USA, (2006.)

• Akihiro Kirihara, Shunsuke Kono, Akihisa Tomita, Kazuo Nakamura, K. Naoi: "Development of Scanning Near-field Optical Microscope Working Under Low Temperature and Strong Magnetic Field," 5th Asia-Pacific Conference on Near-Field Optics (APNFO5), Niigata, Japan (2005)
• Yoshiyuki Tsuda, Bao-Sen Shi, Akihisa Tomita, Masahito Hayashi, Keiji Matsumoto, and Yun-kun Jiang, "Hypothesis testing for an entangled state produced by spontaneous parametric down conversion," ERATO Conference on Quantum Information Science (EQIS05), Tokyo, Japan (2005).
• Kunihiro Kojima and Akihisa Tomita, "Influence of pure-dephasing by phonons on exciton-photon interface," ERATO Conference on Quantum Information Science (EQIS05), Tokyo, Japan (2005).
• Yun-Kun Jiang, Xiang-Bin Wang, Bao-Sen Shi, and Akihisa Tomita, "Experimental verification of fault tolerant quantum key distribution protocol," ERATO Conference on Quantum Information Science (EQIS05), Tokyo, Japan (2005).
• Shunsuke Kono, Akihiro Kirihara, Akihisa Tomita, Kazuo Nakamura, Ken-ichi Nishi, H. Saito, Jun-ichi Fujikata, and H. Ohashi: "Time-resolved Photoluminescence Measurement of Exciton and Biexciton in an InAs/GaAs Single Quantum Dot," International Quantum Electronics Conference (IQEC), Tokyo, Japan (2005)

• Akihiro Tanaka, Akihisa Tomita, Akira Tajima, Takeshi Takeuchi, Seigo Takahashi, Yoshihiro Nambu, "Temperature Independent QKD System Using Alternative-Shifted Phase Modulation Method," 30th European Conference on Optical Communication (ECOC), Stockholm, Sweden Tu4.5.3 (2004).
• Bao-Sen Shi and Akihisa Tomita: "Time Uncertainty of a Photon Pair Creation in a Bulk Periodically Poled Potassium Titanyl Phosphate Pumped by a Femtosecond Laser," ERATO conference on Quantum Information science (EQIS2004), NII, Tokyo, Japan (Sep. 4, 2004)
• Achanta Venu Gopal and Akihisa Tomita: "High Quality Factor Photonic Crystal Microcavity Design for Solid-State Quantum Phase Gate," ERATO conference on Quantum Information science (EQIS2004), NII, Tokyo, Japan (Sep. 4, 2004)

• Koji Usami, Yoshihiro Nambu, Bao-Sen Shi, Akihisa Tomita and Kazuo Nakamura: "Observation of Antinormally-ordered Intensity Correlation of Electromagnetic Field via Stimulated Parametric Down-conversion," Non-locality of Quantum Mechanics and Statistical Inference Kyoto Sangyo University, Kyoto, Japan (2003).
• Bao-Sen Shi and Akihisa Tomita: "Generation of pulsed polarization entangled photon pair using a Sganac interferometer," ERATO conference on Quantum Information science (EQIS2003), Niijima-kaikan, Kyoto Japan (2003).
• Akihisa Tomita and Kazuo Nakamura, "Measured Quantum Fourier Transform on Fiber optics," ERATO conference on Quantum Information Science (EQIS2003), Niijima-kaikan, Kyoto Japan (2003).
• Xiang-bin Wang, Bao-Sen Shi, Akihisa Tomita, and Keiji Matsumoto: "Quantum entanglement swapping with spontaneous parametric down conversion," Proc. SPIE, Vol. 5105, 59 (2003). Quantum Information and Computation, Orlando, FL, USA, April 21 (2003).

• Bao-Sen Shi and Akihisa Tomita: "A novel way for preparation of Bell state using femtosecond pulse pumped spontaneous parametric down-conversion," ERATO workshop on Quantum Information science (EQIS2002), Sanjo-Conference Hall, University of Tokyo, Tokyo, Japan (2002).
• Bao-Sen Shi and Akihisa Tomita: "Schemes for generating W state of paths and W state of polarization photons," ERATO workshop on Quantum Information science (EQIS2002), Sanjo-Conference Hall, University of Tokyo, Tokyo, Japan (2002).

• Masatoshi Tokushima, Hideo Kosaka, Akihisa Tomita, and Hirohito Yamada, "Direct Observation of Lightwave Propagation through a 120 -sharply-bent Single-line-defect Photonic Crystal Waveguide," Int Workshop on Photonic & Electromagnetic Crystal Structures (PECS), Sendai, Japan, (2000).

• Akihisa Tomita, Jagdeep Shah, J.E. Cunningham, S.M. Goodnick, P. Lugli, and S.L. Chuang: " Femtosecond dynamics of non-thermal holes in n-type modulation-doped quantum wells," 8th International conference on hot carriers in semiconductors, Oxford, UK, (1993).
• Akihisa Tomita, Jagdeep Shah, DaiSik Kim, Teodore C. Damen, J.M. Cuo, Stefen Schmitt-Rink, Peter Thomas, and Robert S. Knox: "Energy transfer between quantum wells by dipole-dipole interaction?" Quantum Electronics and Laser Science Conference (QELS), Technical Digest Series, Vol. 12, 116 (1992).
• Akihisa Tomita, Jagdeep Shah, DaiSik Kim, Teodore C. Damen, J.M. Cuo, Stefen Schmitt-Rink, Peter Thomas, and Robert S. Knox: "Dipole-dipole transfer between quantum wells?" International Conference on Quantum Electronics (IQEC), Technical Digest Series, Vol. 9, 102 (1992).
• Shigeru Murata, Akihisa Tomita, Jun-ichi. Shimizu, and Akira Suzuki: "THz optical frequency conversion of 1Gb/s signals using highly nondegenerate four wave mixing in semiconductor lasers," European Conference on Optical Communications (ECOC), (1991).
• Jun-ichi Shimizu, Hirohito Yamada, Shigeru Murata, Akihisa Tomita, and Koji. Kitamura: "Optical confinement factor dependence of K-factor, differential gain, and nonlinear gain coefficient in 1.55 m MQW and strained MQW lasers," IEEE Device Research Conference, III A-2, (1991).
• Akihisa Tomita and Akira Suzuki: "A New Density Matrix Theory on Semiconductor Lasers Considering Non-Markoffian Intraband Relaxation," The 12th IEEE International Semiconductor Laser Conference, Davos (Switzerland) L. 24 (1990).

• Akihisa Tomita, Yuji Kohga, and Akira Suzuki, Tomoji Terakado, and Akira Ajisawa: "5:1 on-off contrast InGaAs/InP multiple quantum well Fabry-Perot etalon modulator," extended abstract, the 21st Conference on Solid State Devices and Materials, Tokyo, pp. 549-550 (1989).
• Akihisa Tomita, Shunsuke Ohkouchi, and Akira Suzuki: "170 ps Fast response in Bistable laser diodes with electrically controlled saturable absorber," Topical Meeting on Photonic Switching, Lake Tahoe (NV), (1987).

• Akihisa Tomita, Ken-ichiro Yoshino, Yoshihiro Nambu, Akio Tajima, Seigo Takahashi, Wakako Maeda, Shigehito Miki, Zhen Wang, Mikio Fujiwara, and Masahide Sasaki,
  "High speed quantum key distribution system," Optical Fiber Technology 16 (1), pp. 55-62 (2010).

• Wakako Maeda, Akihiro Tanaka, Seigo Takahashi, Akio Tajima, and Akihisa Tomita,
  "Technologies for Quantum Key Distribution Networks Integrated With Optical Communication Networks," IEEE J. Selected Topics on Quantum Electron. 15 (6), pp.1591-1601 (2009).

• A. Tomita, Y. Nambu, and A. Tajima, "Recent progress in quantum key transmission," NEC J. Advanced Tech. 2 pp. 84-91 (2005).

• A. Tomita, "Quantum　Fourier　Transform with fiber optics," NEC R&D Journal pp. 282-284 (2003).
• A. Tomita, "High Performance Photon Detector for Qubit Discrimination in 1550 nm," NEC R&D Journal pp. 290-293 (2003).

• M. Sasaki, M. Fujiwra, H. Ishizuka, W. Klaus, K. Wakui, M. Takeoka, A. Tanaka, K. Yoshino, Y. Nambu, S. Takahashi, A. Tajima, A. Tomita, T. Domeki, T. Hasegawa, Y. Sakai, H. Kobayashi, T. Asai, K. Shimizu, T. Tokura, T. Tsurumaru, M. Matsui, T. Honjo, K. Tamaki, H. Takesue, Y. Tokura, J. F. Dynes, A. Dixon, A. W. Sharpe, Z. L. Yuan, A. J. Shields, S. Uchikoga, M. Legre, S. Robyr, P. Trinkler, L. Monat and J.-B. Page, G. Ribordy, A. Poppe, A. Allacher, O. Maurhart, T. Langer, M. Peev, and A. Zeilinger,
  "Tokyo QKD Network and the evolution to Secure Photonic Network," Conference on Lasers and Electro-Optics (CLEO2011), May 1-6 (2011).
• K. Kitayama, M. Sasaki, S. Araki, M. Tsubokawa, A. Tomita, K. Inoue, K.Harasawa, Y. Nagasako, A. Takada, "A novel conceptual model of secure photonic networks," Transparent Optical Networks (ICTON), 2011 13th International Conference on , vol., no., pp.1-4, 26-30 June 2011 doi: 10.1109/ICTON.2011.5970925

• Akihisa Tomita, Akio Tajima, Akihiro Tanaka, Ken-ichiro Yoshino, Yoshihiro Nambu, Seigo Takahashi, Shin-ichi Yorozu, "High-speed Quantum Key Distribution System for Metropolitan Networks", Updating Quantum Cryptography and Communications 2010 (UQCC2010), Tokyo, Oct. 18 (2010).
• Akihisa Tomita, "Interplay between Quantum Computation and Quantum Information", The 10th Asian Conference on Quantum Information Science, Tokyo, Aug. 28 (2010).
• T. Nakata, E. Mizuki, T. Tsukuda, S. Takahashi, H. Hatakeyama, T. Anan, K. Makita, A. Tomita, "InAlAs Avalanche photodiodes for gated Geiger-mode Single Photon Counting" Optoelectronics and Communication Conference, Sapporo, July 9 (2010).
• Akihisa Tomita, Akihiro Tanaka, Ken-ichiro Yoshino, Seigo Takahashi, Yoshihiro Nambu, and Akio Tajima, "Implementation of a High-Speed Quantum Key Distribution System for Metropolitan Networks," Quantum Communications Symposium, Optical Fiber Conference and Exposition/ National Fiber Optic Engineers Conference, San Diego, CA, U.S.A., March 21-25 (2010).

• Akihisa Tomita, "Quantum Key Distribution in Photonic Networks," Int. Conf. Quantum Information Technology, NII, Tokyo, Japan, Dec. 2-5 (2009).
• Akihisa Tomita, "Quantum key distribution systems and field trials," 35th European Conference on Optical Communication, (ECOC 2009), WS-9, Vienna, Austria, Sept. 20-24 (2009).
• Akihisa Tomita, "Test and measurement on quantum key distribution systems," Proc. SPIE, Vol. 7236, 72360K (2009). Quantum Communications Realized II, San Jose, CA, USA, Jan. 28 (2009).

• Akihisa Tomita, "R&D and standardization of QKD in Japan," Updating Quantum Cryptography 2008, Plenary Talk (I), Tokyo, Japan, Dec. 1 (2008).
• Akihisa Tomita, "High Speed BB84 Quantum Key Distribution System-design and transmission performance," The 12th International Conference on Quantum Optics and Quantum Information (ICQO) Mo22D(Z)b, Vilnius, Lithuania, Sept. 20-23 (2008).
• Akihiro Tanaka, Mikio Fujiwara, Sae Woo Nam, Yoshihiro Nambu, Seigo Takahashi, Wakako Maeda, Ken-ichiro Yoshino, Shigehito Miki, Burm Baek, Zhen Wang, Akio Tajima, Masahide Sasaki, and Akihisa Tomita, "Quantum key distribution systems and field trials," 34th European Conference on Optical Communication, (ECOC 2008), pp. 1-4, Brussels, Belgium, 21-25 Sept. (2008).
• Akihisa Tomita, "Photonic systems for quantum information processing ," The 8th Asian Conference on Quantum Information Science (AQIS08), Seoul, Korea, Aug. 27-30 (2008).

• Akihisa Tomita, "Experimental Decoy State Method for Secure Quantum Key Distribution (Tutorial)," The 20th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS), WH 1, Lake Buena Vista, FL, USA, Oct. 24 (2007)
• Akihisa Tomita, "The State of the Art in Secure Quantum Key Distribution" Updating Quantum Cryptography 2007, Lecture (III), Tokyo, Japan, Oct. 1 (2007).
• A. Tomita, "Quantum key distribution system for metropolitan-area networks," Proc. SPIE 6780, 678012 (2007). #6780-36, Quantum Communication Realized, Optics East, Boston, USA, Sep. 9-12, (2007)
• A. Tomita, "Implementing QKD to metro-networks," The theory and realization of practical quantum key distribution, Waterloo, Canada, June 11-14, (2007).
• A. Tomita, "Stable operation of a Secure QKD system in the real-world setting," The DAMOP/DAMP Joint Meeting, Calgary, Canada, June 5-9, (2007).

• A. Tomita, "Recent development on practical quantum key distribution systems," the 8th International Conference on quantum communication, measurement and computing (QCMC), Tsukuba, Japan Nov. 28-Dec.3, (2006).
• A. Tomita, "Practical implementation and security of quantum key distribution," 2006 US-Japan Workshop on Quantum Information Science in Hawaii, Wailea, USA (Oct. 16-20, 2006).
• A. Tajima, A. Tanaka, W. Maeda, S. Takahashi, Y. Nambu, and A. Tomita, "Recent Progress in Quantum Key Distribution Network Technologies," 31st European Conference on Optical Communication (ECOC), Cannes, France Th2.6.2 (2006).
• A. Tomita, "Research Directions toward Quantum Networks," Asian Conference on Quantum Information Science (AQIS), Beijing, China (2006.)
• M. Hayashi, Y. Tsuda, M. Matsumoto, A. Tomita, B.-S. Shi, and Y.-K. Jiang, "Testing for maximaly entangled state (theory and experiment)," Seminar 7 Quantum information and quantum computation, 15th International Laser Physics Workshop, Lausanne , Switzerland (2006).
• Bao-Sen Shi and Akihisa Tomita, "Four photons interfering but showing the two-photon interference behavior," Seminar 7 Quantum information and quantum computation, 15th International Laser Physics Workshop, Lausanne , Switzerland (2006).
• A. Tomita, "Sagnac interferometers in quantum information technology," Seminar 7: Quantum information and quantum computation, 15th International Laser Physics Workshop, Lausanne, Switzerland (July 24-18, 2006).
• A. Tomita, "R&D activities on Quantum Key Distribution in Japan," the Workshop on Towards Quantum Standard, London, England, May 25-26, (2006).

• A. Tomita, "Practical quantum key distribution system," International Conference on Quantum Information, Dresden, Germany, Sep. 26-30, (2005).
• B.S. Shi and A. Tomita: "Observation of the Franson-type two-photon interference under the condition that the coherence length of the pump laser is much less than the path difference between the two interfering beams by association of a bulk periodically poled potassium titanyl phosphate crystal and a femtosecond laser," the Quantum Information and Computation Symposium, The14th workshop on Laser Physics 2005, Keihanna Plaza, Kyoto, Japan July 4-8, (2005)

• A. Tomita, "Recent development of technologies for quantum communication," Proc. SPIE 5631, 24 (2005). #5631-07, Photonics Asia 2004, Beijing, P. R. China Nov. 9-12, (2004).
• A. Tomita and K. Nakamura, "1024-qubits quantum Fourier transform on a fiber optics circuit," Proc. SPIE 5833, 239 (2005). #7-3, Quantum Informatics 2004, Moscow, Russia Oct. 5-8, (2004).
• A. Tomita, "Quantum Information Processing with fiber optics: Quantum Fourier Transform of 1024 Qubits," the 10th International Conference on Quantum Optics, Minsk, Belarus May 30, (2004)

• Y. Nambu, K. Usami, A. Tomita, S. Ishizaka, T. Hiroshima, M. Tsuda, K. Matsumoto, and K. Nakamura: "Experimental Investigation of Pulsed Entangled Photons and Photonic Quantum Channels," Proc. SPIE 4917, 13 (2002). Photonics Asia, Int Soc for Optical Engineering (SPIE), Shanghai, China, Oct. 14-18 (2002).
• A. Tomita, "Quantum information processing with fiber optics," ERATO workshop on Quantum Information Science (EQIS2002), Sanjo-Conference Hall, University of Tokyo, Tokyo, Japan Sep. 7, (2002).
• A. Tomita, Y. Nambu, K. Nakamura: "Quantum Information Processing with Photonic Devices," The international Conference on Fundamentals of Electronics, Communications and Computer Sciences (ICFS 2002), Waseda University, Tokyo, Japan. Mar. 28. (2002).

• H. Kosaka, T. Kawashima, A. Tomita, M. Notomi, T. Tamamura, T. Sato, and S. Kawakami: "Superprism Phenomena in Photonic Crystals," OSA Topical Meeting on Quantum Optoelectronics, Snowmass Village, CO, 12-16 April, (1999).
• A.Tomita: "Space charge and many body effects on the optical gain in semiconductor quantum wells for advanced laser design," Proceedings of SPIE vol. 3625. p. 88 (1999). Physics and simulation of optoelectronic devices VII, San Jose, CA, 25-29 January (1999).

• 富田章久：基礎からの量子光学　"量子暗号鍵配布の安全性理論"オプトロニクス社　(2009)
• Akihisa Tomita and Bao-Sen Shi, "Realization of Quantum Information System" in "Quantum Computation and Information - From Theory to Experiment," Topics in Applied Physics, Vol. 102, Hiroshi Imai, Masahito Hayashi Eds. (Springer Verlag, Berlin, 2006) ISBN: 3-540-33132-8
• 田島章雄　南部芳弘　富田章久： 量子情報通信 ―基礎から最前線まで―"量子暗号　メトロネットワーク展開へ向けたシステム安定化・小型化技術"」オプトロニクス社　(2006)
• 今井浩　富田章久　小林弘志：情報セキュリティハンドブック　第2編第8章　"量子暗号"　　電子情報通信学会編　オーム社　(2004)

• 富田章久:"単一光子による量子暗号鍵配付システム"　光学　39巻1号　pp.10-16 (2010).

• 富田章久："量子もつれ光子対の発生"光アライアンス　20巻10号　pp.5-9　(2009).

• 富田章久："量子暗号鍵配布の安全性理論"　オプトロニクス　Vol.26, No.308, pp. 147-155 (2007).
• 富田章久： "量子暗号鍵配布システムの実際" 電子情報通信学会論文誌Ａ Vol.J90-A, No. 5, pp. 358-366 (2007)
• Xiang-Bin Wang, Tohya Hiroshima, Akihisa Tomita, and Masahito Hayashi, "Quantum information with Gaussian states," Phys. Rep., 448, Nos. 1-4, pp. 1-111 (2007). [19]

• 富田章久：パラメトリックダウンコンバージョンによるもつれ光子の生成、　光技術コンタクト　44巻　11月号　pp.621-630　(2006).

• 宇佐見康二、南部芳弘、富田章久、中村和夫：真空揺らぎに感度を持つ光子検出器　日本物理学会誌　60巻　pp. 363-367　(2005)

• 富田章久：半古典的量子フーリエ変換　数理科学　6月号　pp．20-24　(2004)
• 富田章久：エンタングルド光子対の発生　光学　33巻 5月号pp. 264-270 (2004).

• 中村和夫、富田章久、南部芳弘：量子暗号システムの普及に向けて　別冊数理科学　量子情報科学とその展開pp.160-166　(2003)

• 今井浩、松本啓史、富田章久：量子情報処理による新ムーアの法則－量子ビット並列による高速化－　情報処理　43 巻11 号 pp.1204-1209 (2002)　
• 松本啓史、富田章久、今井浩：大規模量子計算の可能性　Computer Today 9月号 pp. 11-16 (2002)
• 南部芳弘、富田章久："光量子暗号システム"電子情報通信学会誌　8月号 pp. 606-612 (2002)
• 富田章久："量子暗号"オペレーションズ・リサーチ　5月号　pp. 322-327 (2002)

• 富田章久："光による量子ゲートの実現について"Computer Today　9月号　pp. 17 -23 (2001)

• 富田章久、甲賀祐二、鈴木明：「MQWエタロンを用いた空間光変調素子」光学　12月号 pp. 689-690 (1989).

1. 富田章久：光変調器**　特願昭63-027461 (1988)　 特許第2513265号
2. 富田章久：アバランシェフォトダイオード** 特願昭63-291583 (1988) 特許第2100015号
3. 富田章久：光半導体材料*　特願平01-187733　特許第2540949号(1996)
4. 富田章久：光ファイバ分散補償方法* 特願平02-100601 (1990) 特許第2910144号
5. 富田章久：光ファイバ分散補償方法* 特願平02-100602 (1990) 特許第2910145号
6. 富田章久：光ファイバ通信方法* 特願平02-094514 (1990) 特許第3006023号
7. 富田章久：半導体レ－ザ装置* 特願平03-043107 (1991) 特許第2943359号
8. 富田章久：量子井戸半導体レ－ザ装置* 特願平05-330429 (1993) 特許第2748838号 EPC 0660473(1997) USP 5642372(1997) CANP 2139141(1999)
9. 富田章久、仁道正明、鈴木明：半導体レーザ* 特願平06-099815 (1994) 特許第2556288号
10. 木村明隆、仁道正明、富田章久、鈴木明：多重量子井戸半導体レーザ* 特願平06-155920 (1994) 特許第2697615号　US 5559820　(1996)
11. 上野芳康、沢野博之、富田章久：半導体レーザ 特願平07-023339 (1995) 特許第2814943号　(1998)
12. 富田章久：半導体レーザ* 特願平08-254618 (1996) 特許第2930031号　USP6014394　(2000)
13. 富田章久：波長計測装置及び該波長計測装置を備えた波長制御装置* 特願平09-088319 (1997) 特許第2976919号
14. ドミニク メイヤース、河野 芳江、南部 芳弘、富田 章久： 量子暗号鍵を用いた通信システム 特願平11-304332　特許第3565256号 USP6678379B1
15. 富田章久：単一光子発生装置　特願2000-039212　特許第3422482号　USP6665486B2　(2003)
16. 富田章久：量子回路　特願2000-230366　特許第3981969号　USP6444999 B1(2002)
17. 富田章久：量子暗号鍵配布装置　特願2000-252656　特許第3829602号　USP6895092B2　(2005)
18. 南部芳弘、富田章久、数井賢治　光パルス幅測定方法及びその装置　特願2002-080109　特許4027697号　(2007)
19. 富田章久：量子回路および量子計算機　特願2002-255649　特許4030838号(2007)
20. 富田章久：光子検出器とそれを用いた量子通信装置及び量子計算機　特願2002-037859　特許4132860号(2008)

*：権利放棄、**：権利期間満了