シリコン中のエンタングルメント及び量子ホログラフィックメモリー動作に関する研究

2013 Fiscal Year Annual Research Report

• Project/Area Number: 22241024
• Research Institution: Keio University
• Principal Investigator: 伊藤 公平 慶應義塾大学, 理工学部, 教授 (30276414)
• Project Period (FY): 2010-04-01 – 2014-03-31
• Keywords: 量子情報 / 半導体

Research Abstract

今年度は昨年度に論文発表したシリコン中のビスマス(Bi)ドナー量子ビットの電子スピン共鳴（量子操作）に関する詳細を調べた。シリコン基板にイオン注入されたビスマスドナーの電子スピン共鳴を60mT以下の低磁場で実現したが、ここで共鳴線の形状が横軸磁場に対して左右非対称になることを発見し、この効果は、ビスマス量子のスピン状態読み出しに用いている再結合中心（欠陥）との相互作用によることを定量的に示した。また、外部からの印加磁場を一定に保ちながら、励起電磁波の周波数を変化させることで、所望の量子遷移を選択し、その結果として量子計算や量子通信に必要な量子初期状態を得て、その後に任意の量子操作を実行する手法の展開を行い、ビスマス量子ビットと超伝導量子ビットとの結合に関する理論的な考察を実施した。さらに、同位体制御されたシリコン中のリン(P)ドナーの核スピン共鳴を実施し、その核磁気共鳴線が最近接の4つのシリコン安定同位体の平均質量によって分裂し、これら分裂したピークの位置が、バルク全体で考えたシリコン安定同位体の平均質量に対して線形的にシフトすることを見出した。リン核スピンを量子ビットに用いる場合には、周りのシリコン同位体を一種類の質量に統一することの重要性を示した結果である。また、あえて最近接シリコンの同位体分布を制御することから、同じ31P核磁気共鳴であっても比較的自由に共鳴周波数が変化させられることを示した。

Current Status of Research Progress

Reason

25年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

25年度が最終年度であるため、記入しない。

Research Products

• [Journal Article] Identification of Photo-Induced Spin-Triplet Recombination Centers Situated at Si Surfaces and Si/SiO2 Interfaces (2013)
  • Author(s): M. Otsuka,T.Matsuoka,L.S.Vlasenko, M. P. Vlasenko, and K. M. Itoh
  • Journal Title: Appl.Phys.Lett. Volume: 103 Pages: 111601
  • DOI: 10.1063/1.4820824
  • Peer Reviewed
• [Presentation] Silicon NMR Quantum Information Processing (2013)
  • Author(s): K. M. Itoh and T. Sekiguchi
  • Organizer: NMR Quantum Information Processing in Rio
  • Place of Presentation: Rio de Janeiro, Brazil
  • Year and Date: 20131127-29
  • Invited
• [Presentation] Host Isotope Mass Effects on the Hyperfine Interaction of Group V Donors in Silicon (2013)
  • Author(s): T. Sekiguchi, S. Tojo, R. Mori, A. M. Tyryshkin, J. J. L. Morton, M. L. W. Thewalt, E. Abe, S. Lyon, H. Riemann, N. V. Abrosimov, P. Becker, H.-J. Pohl, J. W. Ager, E. E. Haller, and K. M. Itoh
  • Organizer: NMR Quantum Information Processing in Rio
  • Place of Presentation: Rio de Janeiro, Brazil
  • Year and Date: 20131127-20131129
• [Presentation] NV Centers in Isotopically Enriched Diamond for Quantum Sensor Application (2013)
  • Author(s): K. Ohashi, T. Rosskopf, I. Gros, H. Watanabe, S. Tomizawa, J. Iyshi-Haase, T. Ishikawa, K. M. Fu, C. Santori, V. M. Acosta, R. G. Beausoleil, S. Shikata, C. L. Degen, and K. M. Itoh
  • Organizer: JSAP-MRS Joint Symposia
  • Place of Presentation: Kyoto, Japan
  • Year and Date: 20130916-20
  • Invited
• [Presentation] Single Nitrogen-Vacancy Centers Places in 5 nm Thick Isotopically Enriched 12C Diamond Layer (2013)
  • Author(s): K. Ohashi, T. Rosskopf, H. Watanabe, S. Tomizawa, J. Ishi-Hayase, T. Ishikawa, K. M. Fu, C. Santori, V. M. Acosta, R. G. Beausoleil, S. Shikata, C. L. Degen, and K. M. Itoh
  • Organizer: 7th International School and Conference on Spintronics and Quantum Information Technology (SPINTECH VII)
  • Place of Presentation: Chicago, USA
  • Year and Date: 20130729-20130802
• [Presentation] Host Isotope Mass Effects on the Hyperfine Interaction of 31P Donor in Silicon (2013)
  • Author(s): T. Sekiguchi, S. Tojo, R. Mori, E. Abe, K. M. Itoh, A. Tyryshkin, S. Lyon, J. J. L. Morton, M. L. W. Thewalt, H. Rieman, N. V. Abrosimov, P. Becker, and H.-J. Pohl
  • Organizer: 7th International School and Conference on Spintronics and Quantum Information Technology (SPINTECH VII)
  • Place of Presentation: Chicago, USA
  • Year and Date: 20130729-20130802
• [Presentation] Discovery of Photoexcited Spin Triplet Recombination Centers Situating at the Interface of Silicon and Silicon Dioxide (2013)
  • Author(s): M. Otsuka, T. Matsuoka, L. S. Vlasenko, M. P. Vlasenko, and K. M. Itoh
  • Organizer: 27th International Conference on Defects in Semiconductors (ICDS 27)
  • Place of Presentation: Bologna, Italy
  • Year and Date: 20130721-20130726
• [Presentation] A Hybrid Quantum Computer Architecture (2013)
  • Author(s): T. Sekiguchi, S. Berger, P. A. Mortemousque, C. Culan, K. M. Itoh, T. Ishikawa, Y. Tabuchi, R. Yamazaki, and Y. Nakamura
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Spin Dependant Recombination Study of Bismuth in Silicon (2013)
  • Author(s): C. Culan, L. Dreher, F. Hoehne, M. Brandt, P. A. Mortemousque, T. Sekiguchi, R. G. Elliman, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Optimal Working Posints for Electrically Detected Magnetic Resonance of Donors in Silicon (2013)
  • Author(s): P.-A. Mortemousque, S. Berger, C. Culan, T. Sekiguchi, F. Hoehne, M. S. Brandt, R. G. Elliman, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Negatively Charged Nitrogen-Vacancy Centers Placed in a 5 nm Thick Isotopically Purified 12C Diamond Layer (2013)
  • Author(s): K. Ohashi, T. Rosskopf, H. Watanabe, S. Tomizawa, J. Ishi-Hayase, T. Ishikawa, K. M. Fu, C. Santori, V. M. Acosta, R. G. Beausoleil, S. Shikata, C. L. Degen, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Study of the Structure of Group IV Based Diluted Magnetic Semiconductors (2013)
  • Author(s): A. Truong and K. M. Itoh,
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Line and Space Patterns Fabricated by Metal Assisted Chemical Etching (2013)
  • Author(s): M. Yamada and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Fabrication of Sub-10nm Gold Nanoparticles on Si Substrate Using Biotemplate Method (2013)
  • Author(s): T. Isoda, I. Yamashita, S. Samukawa, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Carrier Density Dependence of Two-Dimensional Hole Gas Mobility in Strained Ge (2013)
  • Author(s): T. Tanaka, Y. Hoshi, K. Sawano, Y. Shiraki, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Toward Measuring the Quadrupole Effect of Antimony in Silicon (2013)
  • Author(s): S. Rosenius, P. A. Mortemousque, C. Culan, M. S. Brandt, R. G. Elliman, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Bulk Monocrystal Growth by Floating Zone Method and Bismuth-Doped Silicon (2013)
  • Author(s): K. Yamada, S. Hyodo, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Identification of Photo-Induced Spin Triplet Recombination Centers Situating at Si Surfaces and Si/SiO2 Interfaces (2013)
  • Author(s): M. Otsuka, T. Matsuoka, L. S. Vlasenko, M. P. Vlasenko, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Coherent Control and Electrical Read out of Nuclear Spins in Silicon Using Electron Spin Pairs (2013)
  • Author(s): D. P. Franke, L. Dreher, F. Hoehne, M. S. Brandt, L. S. Vlasenko, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
• [Presentation] Growth and Characterization of Isotopically Enriched CVD 12C Films with Well-behaved Near Surface NVs (2013)
  • Author(s): K. Ohashi, T. Rosskopf, I. Gross, H. Watanabe, S. Tomizawa, J. Ishi-Hayase, T. Ishikawa, K. M. Fu, C. Santori, V. M. Acosta, R. G. Beausoleil, S. Shikata, C. L. Degen, and K. M. Itoh
  • Organizer: The 12th Asia Pacific Physics Conferece of AAPPS
  • Place of Presentation: Makuhari Messe Chiba, Japan
  • Year and Date: 20130714-20130719
  • Invited
• [Presentation] Negatively Charge Nitrogen-vacancy Centers in a 5 nm Thick, Hydrogen-terminated, Isotopically Purified Diamond layer (2013)
  • Author(s): K. Ohashi, T. Rosskopf, H. Watanabe, S. Tomizawa, J. Ishi-Hayase, T. Ishikawa, K. M. Fu, C. Santori, V. M. Acosta, R. G. Beausoleil, S. Shikata, C. L. Degen, and K. M. Itoh,
  • Organizer: The Workshop on Diamond - Spintornics, Photonics, Bio-applications
  • Place of Presentation: Hong Kong
  • Year and Date: 20130427-20130429
• [Presentation] Site Selective Doping of Nitrogen-Vacancy Centers in Diamond Thin Film Fabricated Using Nitorogen-Doped Chemical Vapor Deposition with Micropatterned Substrate (2013)
  • Author(s): T. Gomi, S. Tomizawa, K. Ohashi, K. M. Itoh, H. Watanabe, H. Umezawa, S. Shikata, and J. Ishi-Hayase
  • Organizer: The Workshop on Diamond - Spintornics, Photonics, Bio-applications
  • Place of Presentation: Hong Kong
  • Year and Date: 20130427-20130429