Toward the realization of Quantum Cybernetics using photonic quantum circuits

2013 Fiscal Year Final Research Report

• Project Area: Quantum cybernetics - interdisciplinary studies of quantum controls and developments toward quantum computing
• Project/Area Number: 21102007
• 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: Hokkaido University
• Principal Investigator: TAKEUCHI Shigeki 北海道大学, 電子科学研究所, 教授 (80321959)
• Co-Investigator(Renkei-kenkyūsha): OKAMOTO Ryo 北海道大学, 電子科学研究所, 助教 (10435951)
• Project Period (FY): 2009-07-23 – 2014-03-31
• Keywords: 量子サイバネティクス / 量子情報 / 光子 / 制御 / 量子回路 / フィードバック

Research Abstract

The aim of this project was to explore the new concept Quantum Cybernetics using photonic quantum information technologies thorough collaborations with other researchers inside/outside the Quantum Cybernetics project groups. The main achievements include the realization of adaptive quantum state estimation, the realization of the optical quantum circuit for the heralded controlled not gate operation, the highly efficient coupling of photons from nanoemitters to a single-mode optical fiber using a nano-tapered optical fiber, and an entanglement-enhanced microscope.

Research Products

• [Journal Article] An Entanglement-enhanced Microscope (2013)
  • Author(s): T.Ono, R.Okamoto and S.Takeuchi
  • Journal Title: Nature Communications Volume: Vol.4 Pages: 3426
  • DOI: 10.1038/ncomms3426
  • Peer Reviewed
• [Journal Article] Experimental demonstration of adaptive quantum state estimation (2012)
  • Author(s): R.Okamoto, M.Iefuji, S.Oyama, K.Yamagata, H.Imai, A.Fujiwara and S.Takeuchi
  • Journal Title: Phys. Rev. Lett Volume: Vol.109 Pages: 130404
  • DOI: 10.1103/PhysRevLett.109.130404
  • Peer Reviewed
• [Journal Article] Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers (2011)
  • Author(s): M.Fujiwara, K.Toubaru, T.Noda, H.Q.Zhao and S.Takeuchi
  • Journal Title: Nano Letters Volume: Vol. 11 Pages: 4362-4365
  • DOI: 10.1021/nl2024867
  • Peer Reviewed
• [Journal Article] Realization of a photonic quantum circuit combining effective optical nonlinearities into a Knill-Laflamme-Milburn C-NOT gate (2011)
  • Author(s): R. Okamoto, J.L. O'Brien, H.F. Hofmann, and S. Takeuchi
  • Journal Title: Proceedings of the National Academy of Science Volume: Vol. 108 Pages: 10067-10071
  • DOI: 10.1073/pnas.1018839108
  • Peer Reviewed
• [Presentation] Experimental demonstration of adaptive quantum state estimation (2013)
  • Author(s): S. Takeuchi, R. Okamoto, M. Iefuji, S. Oyama, K. Yamagata, H. Imai and A. Fujiwara
  • Organizer: 20th Central European Workshop on Quantum Optics, The Royal Institute of Technology (KTH)
  • Place of Presentation: Stockholm, Sweden
  • Year and Date: 2013-06-01
  • Invited
• [Presentation] Optical quantum circuit combining tailored optical nonlinearities (2011)
  • Author(s): S. Takeuchi, R. Okamoto, M. Fujiwara, H.Q. Zhao, H. Takashima, A. Tanaka, H.F. Hofmann, J.L. O'Brien
  • Organizer: SPIE Photonics west 2011
  • Place of Presentation: The Moscone Center
  • Year and Date: 2011-01-26
  • Invited
• [Presentation] 光子を操る-光量子回路の実現とその未来 (2010)
  • Author(s): 竹内繁樹
  • Organizer: 第71回応用物理学会学術講演会特別シンポジウム「レーザー50 周年」
  • Place of Presentation: 長崎大学文教キャンパス
  • Year and Date: 2010-09-15
  • Invited
• [Book] 第2編応用編 第1節 量子情報通信・処理の実現に向けた高効率固体量子位相ゲート (2010)
  • Author(s): 竹内繁樹
  • Total Pages: 440
  • Publisher: エヌ・ティー・エス
• [Book] I-1-6 光量子回路の現状と展望 (2010)
  • Author(s): 竹内繁樹
  • Total Pages: 14 (272)
  • Publisher: 強光子場科学研究懇談会 発行
• [Remarks] 北海道大学電子科学研究所光量子情報研究分野
  • URL: http://www.sanken.osaka-u.ac.jp/labs/qip/index.html
• [Patent(Industrial Property Rights)] テーパー光ファイバ (2013)
  • Inventor(s): 竹内 繁樹
  • Industrial Property Rights Holder: 北海道大学
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 第5354605
  • Filing Date: 2013-09-06