Quantum optics and non classical state generation using semiconductors

2012 Fiscal Year Final Research Report

• Project Area: Optical science of dynamically correlated electrons in semiconductors
• Project/Area Number: 20104003
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Osaka University
• Principal Investigator: IMOTO Nobuyuki 大阪大学, 大学院・基礎工学研究科, 教授 (00313479)
• Project Period (FY): 2008 – 2012
• Keywords: 動的相関光科学 / 非古典光 / 光と物質の相互作用 / 非線形光学 / 量子情報

Research Abstract

We succeeded in developing wavelength conversion in quantum realm, which has been covered by many Japanese newspapers and Physics Today. We observed velocity slowing down in microtroid optical cavities. We have also investigated the tolerance, assuming our original quantum key distribution system, for practical "nearly single-photon source" and clarified that the tolerance is very practical, which is a very good news to the experimentalists. This research result was covered by Nihon Keizai Shinbun.

Research Products

• [Journal Article] Fundamental limit to qubit control with coherent field (2013)
  • Author(s): Kazuhiro Igeta, Nobuyuki Imoto, and Masato Koashi
  • Journal Title: Phys. Rev. A Volume: 87 Pages: 022321-1-8
• [Journal Article] Measurement-Based Quantum Computation on Symmetry Breaking Thermal States, (selected to Editors' suggestion) (2013)
  • Author(s): K. Fujii, Y. Nakata, M. Ohzeki, and M. Murao
  • Journal Title: Phys. Rev. Lett Volume: 110 Pages: 120502
  • Peer Reviewed
• [Journal Article] High-fidelity conversion of photonic quantum information to telecommunication wavelength with superconducting single-photon detectors (2013)
  • Author(s): Rikizo Ikuta, Hiroshi Kato, Yoshiaki Kusaka, Shigehito Miki, Taro Yamashita, Hirotaka Terai, Mikio Fujiwara, Takashi Yamamoto, Masato Koashi, Masahide Sasaki, Zhen Wang, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. A Volume: 87 Pages: 010301(R)
  • Peer Reviewed
• [Journal Article] Duality analysis on random planar lattices (2012)
  • Author(s): M. Ohzeki and K. Fujii
  • Journal Title: Physical Review E Volume: 86 Pages: 051121
• [Journal Article] Error and loss tolerances of surface codes with general lattice structures (2012)
  • Author(s): Keisuke Fujii and Yuuki Tokunaga
  • Journal Title: Phys. Rev. A Volume: 86 Pages: 020303(R)
  • Peer Reviewed
• [Journal Article] Blind topological measurement-based quantum computation (2012)
  • Author(s): Tomoyuki Morimae and Keisuke Fujii
  • Journal Title: Nature Communications Volume: 3 Pages: 1036
  • Peer Reviewed
• [Journal Article] A strange weak value in spontaneous pair productions via a supercritical step potential (2012)
  • Author(s): Kazuhiro Yokota and Nobuyuki Imoto
  • Journal Title: New J. Phys Volume: 14 Pages: 083021
• [Journal Article] Not all physical errors can be linear CPTP maps in a correlationspace (2012)
  • Author(s): Tomoyuki Morimae and Keisuke Fujii
  • Journal Title: Scientific Reports Volume: 2 Pages: 508
  • Peer Reviewed
• [Journal Article] Quantum repeaters and computation by a single module: Remote nondestructive parity measurement (2012)
  • Author(s): Koji Azuma, Hitoshi Takeda, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. A Volume: 85 Pages: 062309-1-7
• [Journal Article] Computational power and correlation in a quantum computational tensor network (2012)
  • Author(s): K. Fujii and T. Morimae
  • Journal Title: Phys. Rev. A Volume: 85 Pages: 032338
  • Peer Reviewed
• [Journal Article] Topologicallyprotected measurement-basedquantum computation on the thermal state of a nearest-neighbor two-body Hamiltonian with spin-3/2 particles (2012)
  • Author(s): K. Fujii and T. Morimae
  • Journal Title: Phys. Rev. A Volume: 85 Pages: 010304(R)
  • Peer Reviewed
• [Journal Article] Wide-band quantum interface for visible-to-telecommunication wavelength conversion (2011)
  • Author(s): Rikizo Ikuta, Yoshiaki Kusaka, Tsuyoshi Kitano, Hiroshi Kato, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Nat. Commun. Volume: 2 Pages: 537
  • DOI: doi:10.1038/ncomms1544
• [Journal Article] An optical fusion gate for W-states (2011)
  • Author(s): S. K. Ozdemir, E. Matsunaga, T. Tashima, T. Yamamoto, M. Koashi, and N. Imoto
  • Journal Title: New J. Phys Volume: 13 Pages: 103003
• [Journal Article] Cheat-sensitive commitment of a classical bit coded in a block of m x n round-trip qubits (2011)
  • Author(s): Kaoru Shimizu, Hiroyuki Fukasaka, Kiyoshi Tamaki, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. A Volume: 84 Pages: 022308
• [Journal Article] Efficient decoherence-free entanglement distribution over lossy quantum channels (2011)
  • Author(s): Rikizo Ikuta, Yohei Ono, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. Lett Volume: 106 Pages: 110503
• [Journal Article] Optimal local expansion of W states using linear optics and Fock states (2011)
  • Author(s): Rikizo Ikuta, Toshiyuki Tashima, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. A Volume: 83 Pages: 012314
• [Journal Article] Demonstration of Local Expansion Toward Large-Scale Entangled Webs (2010)
  • Author(s): Toshiyuki Tashima, Tsuyoshi Kitano, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. Lett Volume: 105 Pages: 210503
• [Journal Article] Comparison of timing jitter between NbN superconducting single-photon detector and avalanche photodiode (2010)
  • Author(s): T. Seki, H. Shibata, H. Takesue, Y. Tokura, N. Imoto
  • Journal Title: Physical C Volume: 470 Pages: 1534-1537
• [Journal Article] Tight bound on coherent-state-based entanglement generation over lossy channels (2010)
  • Author(s): Koji Azuma, Naoya Sota, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. A Volume: 81 Pages: 022325
• [Journal Article] Optimal entanglement generation for efficient hybrid quantum repeaters (2009)
  • Author(s): Koji Azuma, Naoya Sota, Ryo Namiki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. A Volume: 80 Pages: 060303(R)
• [Journal Article] Boosting up quantum key distribution by learning statistics of practical single-photon sources (2009)
  • Author(s): Yoritoshi Adachi, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
  • Journal Title: New J. Phys Volume: 11 Pages: 113033
• [Journal Article] Optimal mirror phase-covariant cloning (2009)
  • Author(s): Karol Bartkiewicz, Adam Miranowicz, and Sahin Kaya Ozdemir
  • Journal Title: Phys. Rev. A Volume: 80 Pages: 032306
• [Journal Article] Unconditional security of the Bennett1992quantum-key-distribution scheme with a strong reference pulse (2009)
  • Author(s): K. Tamaki, N. Lutkenhaus, M. Koashi, and J. Batuwantudawe
  • Journal Title: Phys. Rev. A Volume: 80 Pages: 032302:1--9
• [Journal Article] Simple security proof of quantum key distribution based on complementarity (2009)
  • Author(s): Masato Koashi
  • Journal Title: New J. Phys Volume: 11 Pages: 045018
• [Journal Article] Local Transformation of Two Einstein-Podolsky-Rosen Photon Pairs into a Three-Photon W State (2009)
  • Author(s): Toshiyuki Tashima, Tetsuroh Wakatsuki, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Journal Title: Phys. Rev. Lett Volume: 102 Pages: 130502
• [Journal Article] Direct observation of Hardy's paradox by joint weak measurement with an entangled photon pair (2009)
  • Author(s): Kazuhiro Yokota, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
  • Journal Title: New J. Phys Volume: 11 Pages: 033011
  • DOI: IOP press release - Quantum paradox directly observed - a milestone in quantum mechanics, New Journal of Physics - Best of 2009
• [Journal Article] Compact Toffoli gate using weighted graph states (2009)
  • Author(s): M. S. Tame, S. K. Ozdemir, M. Koashi, N. Imoto, M. S. Kim
  • Journal Title: Phys. Rev. A Volume: 79 Pages: 020302
• [Journal Article] Local expansion of photonic W state using a polarization dependent beamsplitter (2009)
  • Author(s): Toshiyuki Tashima, Sahin Kaya Ozdemir, Takashi Yamamoto, Masato Koashi, Nobuyuki Imoto
  • Journal Title: New J. Phys Volume: 11 Pages: 023024
• [Presentation] Visible-to-Telecommunication wavelength conversion of single photons and its applications (2013)
  • Author(s): T.Yamamoto
  • Organizer: The 11th US-Japan Joint Seminar on Quantum Electronics and Laser Spectroscopy "Ultimate Quantum Systems of Light and Matter- ControlandApplications
  • Place of Presentation: Nara Prefectural New Public Hall, Japan
  • Year and Date: 2013-04-09
• [Presentation] Two-state formalism and photonic quantum information processing (2013)
  • Author(s): N. Imoto
  • Organizer: The 11th US-Japan Joint Seminar on Quantum Electronics and Laser, Spectroscopy "Ultimate Quantum Systems of Light and Matter- Control andApplications"
  • Place of Presentation: Nara Prefectural New Public Hall, Japan
  • Year and Date: 2013-04-04
• [Presentation] Non-classical two-photon interference between telecom light pulses converted by difference-frequency generation (2013)
  • Author(s): R. Ikuta
  • Organizer: The 11th US-Japan Joint Seminar on Quantum Electronics and Laser Spectroscopy "Ultimate Quantum Systems of Light and Matter- ControlandApplications
  • Place of Presentation: Nara Prefectural New Public Hall, Japan
  • Year and Date: 2013-04-04
• [Presentation] イジング分配関数の複雑性と量子計算 (2013)
  • Author(s): 松尾亮,藤井啓祐,井元信之
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学 東広島キャンパス
  • Year and Date: 2013-03-28
• [Presentation] 4量子ビット局所系を用いた分散型量子計算 (2013)
  • Author(s): 藤井啓祐,山本俊,小芦雅斗,井元信之
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学 東広島キャンパス
  • Year and Date: 2013-03-28
• [Presentation] 量子Bang-Bang制御によるデコヒーレンス抑制の限界 (2013)
  • Author(s): 井桁和浩,井元信之,小芦雅斗
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学 東広島キャンパス
  • Year and Date: 2013-03-28
• [Presentation] A Photonic Quantum InterfaceforVisible-to-Telecommunicatio n Wavelength Conversion (2012)
  • Author(s): T. Yamamoto, R. Ikuta, M. Koashi, N. Imoto
  • Organizer: IEEE PHOTONICS CONFERENCE 2012
  • Place of Presentation: Hyatt Regency San Francisco Airport, USA
  • Year and Date: 2012-09-26
• [Presentation] On the robustness of quantum communication based on decoherence-free subspace using counter propagating weak coherent laser light (2012)
  • Author(s): Hidetoshi Kumagai, Takashi Yamamoto, Masato Koashi and Nobuyuki Imoto
  • Organizer: International Conference on Quantum Foundation and Technology (ICQFT 2012)
  • Place of Presentation: Dunhuang Hotel, Dunhuang, China
  • Year and Date: 2012-08-25
• [Presentation] A distributed architecture for scalable quantum computation with realistically noisy devices (2012)
  • Author(s): Keisuke Fujii, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Organizer: DYCE International Workshop
  • Place of Presentation: Kussharo Prince Hotel, Hokkaido, Japan
  • Year and Date: 2012-08-19
• [Presentation] High-fidelity frequency down-conversion of visible entangled photon pairs with superconducting single-photon detectors (2012)
  • Author(s): R. Ikuta, H. Kato, Y. Kusaka, S. Miki, T. Yamashita, H. Terai, M. Fujiwara, T. Yamamoto, M. Koashi, M. Sasaki, Z. Wang, N. Imoto
  • Organizer: 11th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2012)
  • Place of Presentation: Vienna University of Technology, Vienna, Austria
  • Year and Date: 2012-07-30
• [Presentation] Thresholds of surface codes on the general lattice structures suffering biased error and loss (2012)
  • Author(s): Keisuke Fujii and Yuuki Tokunaga
  • Organizer: 11th International Conference on Quantum Communication, Measurement, and Computing (QCMC 2012)
  • Place of Presentation: Vienna University of Technology, Vienna, Austria
  • Year and Date: 2012-07-30
• [Presentation] Fault-tolerant quantum computation and communication on a distributed 2D array of small local systems (2012)
  • Author(s): Keisuke Fujii, Takashi Yamamoto, Masato Koashi, and Nobuyuki Imoto
  • Organizer: 11th International Conference on QuantumCommunication,Measurement,andComputing(QCMC2012)
  • Place of Presentation: Vienna University of Technology, Vienna, Austria
  • Year and Date: 2012-07-30
• [Presentation] Photonic quantum communication with noisy and lossy channels (2012)
  • Author(s): Nobuyuki Imoto
  • Organizer: Quantum 2012 (Advances in Foundations of Quantum Mechanics and Quantum Information with atoms and photons)
  • Place of Presentation: Turin, Italy
  • Year and Date: 2012-05-24
• [Book] 「人物で学ぶ物理10」～仮説クリエーターとしてのデイヴィッド・ボーム～ (2013)
  • Author(s): 井元信之
  • Total Pages: 32
  • Publisher: 数理科学, 3月号 No.597, 「Manipulating the color and shape of single photons」, Physics Today, Volume 65 Issue 11
• [Book] シュレーディンガーの鳥 (2011)
  • Author(s): 井元信之,V.ヴェドゥラル/井元信之訳監修
  • Publisher: 日経サイエンス2011年10月号
• [Book] 弱い量子測定によるハーディーのパラドックスの観測 (2010)
  • Author(s): 横田一広、井元信之
  • Total Pages: 606-613
  • Publisher: 日本物理学会誌 Vol.65, No.8, 2010年8月号
• [Book] 広がる光量子情報技術 (2010)
  • Author(s): 山本俊
  • Total Pages: 8-10
  • Publisher: パリティ Vol.25 No.01 2010年1月号
• [Book] 現代数理科学事典, 編集委員会代表:広中平祐, 「2.8量子情報」 (2009)
  • Author(s): 井元信之
  • Total Pages: 137-145
  • Publisher: 丸善
• [Book] 光科学研究の最前線, p.9「量子情報」p.18「量子測定」 (2009)
  • Author(s): 井元信之
  • Total Pages: 9,18
  • Publisher: 同編集委員会編
• [Book] 基礎からの量子光学, 松岡正浩・江馬一弘・平野琢也・岩本敏監修, 「量子情報処理と光子の利用」 (2009)
  • Author(s): 井元信之
  • Total Pages: 275-288
  • Publisher: オプトロニクス社
• [Book] 量子の"開かずの間"をのぞき見る (2009)
  • Author(s): 井元信之、横田一広
  • Total Pages: 29-35
  • Publisher: 日経サイエンス Vol.39 No.10(2009年10月号)
• [Book] 量子の世界,複製不可能定理 (2009)
  • Author(s): ウィリアム・ウーターズ,ヴォイチェフ・ズーレック,山本俊 訳
  • Total Pages: 44-47
  • Publisher: パリティ Vol.24 No.08 2009年8月号
• [Book] 量子の新時代(朝日新書), 著者:佐藤文隆、井元信之、尾関章 (2009)
  • Author(s): 井元信之
  • Publisher: 朝日新聞出版
  • URL: ISBN:978-4-02-273287-3
• [Book] 多体エンタングルメント情報処理 (2009)
  • Author(s): 井元信之
  • Total Pages: 42-47
  • Publisher: 数理科学第47巻第2号
• [Book] 量子情報処理と光子の利用 (2008)
  • Author(s): 井元信之
  • Total Pages: 165-173
  • Publisher: 月刊オプトロニクス第27巻 第320号
• [Book] 光量子もつれクラスター状態を用いた量子演算の実装実験 (2008)
  • Author(s): 徳永裕己
  • Publisher: 光学 第37巻 第12号
• [Book] 隠れた変数ーベル不等式などー
  • Author(s): 井元信之
  • Total Pages: 40-45
  • Publisher: 数理科学, 2011年7月号(特集:「隠れた」物理法則)