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Quantum Physics using Superconducting Artificial Atoms

Research Project

Project/Area Number 18201018
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Nanostructural science
Research InstitutionNTT Basic Research Laboratories

Principal Investigator

SEMBA Kouichi  NTT Basic Research Laboratories, 量子電子物性研究部, 主幹研究員 (50393773)

Co-Investigator(Kenkyū-buntansha) YAMAGUCHI Hiroshi  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, 部長 (60374071)
NAKANO Hayato  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, 主任研究員 (60393774)
SAITO Shiro  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, 主任研究員 (90393777)
KAKUYANAGI Kousuke  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, 社員 (40417093)
OKAMOTO Hajme  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, 研究主任 (20350465)
TANAKA Hirotaka  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, 研究主任 (80393776)
WANG Ying-Dan  日本電信電話(株)NTT物性科学基礎研究所, 量子電子物性研究部, リサーチアソシエイト (40451083)
Project Period (FY) 2006 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥49,660,000 (Direct Cost: ¥38,200,000、Indirect Cost: ¥11,460,000)
Fiscal Year 2009: ¥12,740,000 (Direct Cost: ¥9,800,000、Indirect Cost: ¥2,940,000)
Fiscal Year 2008: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Fiscal Year 2007: ¥11,960,000 (Direct Cost: ¥9,200,000、Indirect Cost: ¥2,760,000)
Fiscal Year 2006: ¥13,000,000 (Direct Cost: ¥10,000,000、Indirect Cost: ¥3,000,000)
Keywords人工原子 / 微小共振器 / 超精密計測 / 量子エレクトロニクス / メゾスピック系 / メゾスコピック系 / 量子情報 / 超伝導量子ビット / ナノメカニカル共振器 / cavity QED / circuit QED / ジョセフソン量子回路 / 超伝導LC回路 / Lorentz力
Research Abstract

(1) We have succeeded to generate and observe the time evolution of the entanglement between microscopic two level system in the Josephson junction and electro-magnetic field in the superconducting transmission line resonator by using a mesoscopic flux-qubit as an entanglement generator and a part of readout device. (2) By using a Josephson bifurcation amplifier which is characterized by its very fast detection speed and small back action to the measured system, we have clarified the condition for the projection measurement of a quantum superposition state of a macroscopic superconducting artificial atom. (3) We have observed parity symmetry breaking in a strongly coupled flux-qubit microwave resonator circuit QED system. (collaboration with Walther Meissner Institut, Germany) (4) We have succeeded to detect ultra-small displacement of suspended mechanical resonator embedded as an arm of Nb-SQUID. The sensitivity of detection as small as 10fm which is 36 times of the standard quantum limit has been achieved. (collaboration with Delft university of technology, Netherlands)

Report

(6 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report   Self-evaluation Report ( PDF )
  • 2007 Annual Research Report
  • 2006 Annual Research Report
  • Research Products

    (111 results)

All 2010 2009 2008 2007 2006 Other

All Journal Article (29 results) (of which Peer Reviewed: 27 results) Presentation (66 results) Book (3 results) Remarks (5 results) Patent(Industrial Property Rights) (8 results)

  • [Journal Article] A symmetry-breaking electromechanical detector2010

    • Author(s)
      I.Mahboob, C.Froitier, H.Yamaguchi
    • Journal Title

      Appl.Phys.Lett. Volume 96

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum Time-evolution in Qubit Readout Process with a Josephson Bifurcation Amplifier2009

    • Author(s)
      Hayato Nakano, Shiro Saito, Kouichi Semba, Hideaki Takayanagi
    • Journal Title

      Phys. Rev. Lett. 102

      Pages: 257003-257003

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Quantum State Control, Entanglement, and Readout of the Josephson Persistent-Current Qubit2009

    • Author(s)
      K. Semba, J. Johansson, K. Kakuyanagi. H. Nakano, S. Saito, H. Tanaka, H. Takayanagi
    • Journal Title

      Quantum Information Processing 8

      Pages: 199-215

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] 超電導回路で共振器量子電磁力学実験が可能に!‘ジョセフソンCavity-QED2009

    • Author(s)
      仙場浩一、齋藤志郎、角柳孝輔、中ノ勇人
    • Journal Title

      日本物理学会誌 1月号

      Pages: 37-41

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Quantum Time-evolution in Qubit Readout Process with a Josephson Bifurcation Amplifier2009

    • Author(s)
      H.Nakano, S.Saito, K.Semba, H.Takayanagi
    • Journal Title

      Phys.Rev.Lett. 102

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cooling a micro-mechanical resonator by quantum back-action from a noisy qubit2009

    • Author(s)
      Ying-Dan Wang, Yong Li, Fei Xue, C.Bruder, K.Semba
    • Journal Title

      Physical Review B Vol.80

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Experimentally realizable controlled NOT gate in a flux qubit/resonator system2009

    • Author(s)
      S.Saito, T.Tilma, S.J.Devitt, K.Nemoto, K.Semba
    • Journal Title

      Phys.Rev.B 80

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Room temperature piezoelectric displacement detection via a silicon field effect transistor2009

    • Author(s)
      I.Mahboob, K.Nishiguchi, A.Fujiwara, H.Yamaguchi
    • Journal Title

      Appl.Phys.Lett. Volume 95, Issue 23

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Entanglement, and Readout of the Josephson Persistent-Current Qubit2009

    • Author(s)
      K. Semba, J. Johansson, K. Kakuyanagi. H. Nakano, S. Saito, H. Tanaka and H. Takayanagi, Quantum State Control
    • Journal Title

      Quantum Information Processing 8

      Pages: 199-215

    • Related Report
      2008 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] 超電導回路で共振器量子電磁力学実験が可能に!'ジョセフソンCavity-QED'2009

    • Author(s)
      仙場浩一、齋藤志郎、角柳孝輔、中ノ勇人
    • Journal Title

      日本物理学会誌 1月号

      Pages: 37-41

    • Related Report
      2008 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Quantum State Control, Entanglement, and Readout of the Josephson Persistent-Current Qubit2009

    • Author(s)
      K. Semba, J. Johansson, K. Kakuyanagi, H. Nakano, S. Saito, H. Tanaka, H. Takayanagi
    • Journal Title

      Quantum Information Processing 8

      Pages: 199-215

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 超伝導回路で共振器量子電磁力学実験が可能に!'ジョセフソン Cativty-QED'2009

    • Author(s)
      仙場浩一, 齋藤志郎, 角柳孝輔, 中ノ勇人
    • Journal Title

      日本物理学会誌 1月号

      Pages: 37-41

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] ジョセフソン cativy-QEDから量子バス量子計算へ2009

    • Author(s)
      仙場浩一
    • Journal Title

      応用物理 78巻第1号

      Pages: 15-21

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus2009

    • Author(s)
      Y. D. Wang, A. Kemp, K. Semba
    • Journal Title

      Physical Review B 79

      Pages: 24502-24502

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two-photon probe of the Jaynes-Cummings model and controlled symmetry breaking in circuit QED2008

    • Author(s)
      F. Deppe, M. Mariantoni, E.P. Menzel, A. Marx, S. Saito, K. Kakuyanagi, H. Tanaka, T. Meno, K. Semba, H. Takayanagi, E. Solano, R. Gross
    • Journal Title

      Nature Physics 4

      Pages: 686-691

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Motion detection of a micromechanical resonator embedded in a dc-SQUID2008

    • Author(s)
      S. Etaki, M. Poot, I. Mahboob, K. Onomitsu, H. Yamaguchi,, H.S. van der Zant
    • Journal Title

      Nature Physics 4

      Pages: 785-788

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Motion detection of a micromechanical resonator embedded in a dc-SQUID2008

    • Author(s)
      S.Etaki, M.Poot, I.Mahboob, K.Onomitsu, H.Yamaguchi, and H. S. van der Zant
    • Journal Title

      Nature Physics 4

      Pages: 785-788

    • Related Report
      2008 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Cooling of a micro-mechanical resonator by the back-action of Lorentz force2008

    • Author(s)
      Y. D. Wang, K. Semba, H. Yamaguchi
    • Journal Title

      New Journal of Physics 10

      Pages: 43015-43015

    • Related Report
      2008 Annual Research Report 2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Quantum theory of transmission line resonator-assisted cooling of a micromechanical resonator2008

    • Author(s)
      Y. Li, Y. D. Wang, F. Xue, C. Brue
    • Journal Title

      Physical Review B 78

      Pages: 134301-134301

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Motion detection of a micromechanical resonator embedded in ad. c. SQUID2008

    • Author(s)
      S. Etaki, M. Poot, I. Mahboob, K. Onomitsu, H. Yamaguchi, H. S. van der Zant
    • Journal Title

      Nature Physics 4

      Pages: 785-788

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two-photon probe of the Jaynes-Cummings model and controlled symmetry breaking in circuit QED.2008

    • Author(s)
      F. Deppe, M. Mariantoni, E. P. Menzel, A. Marx, S. Saito, K. Kakuyanagi, H. Tanaka, T. Meno, K. Semba, H. Takayanagi, E. Solano, R. R. Gross.
    • Journal Title

      Nature Physics 4

      Pages: 686-691

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Parametrically pumped ultrahigh Q electromechanical resonator2008

    • Author(s)
      I. Mahboob, H. Yamaguchi
    • Journal Title

      Appl. Phys. Lett. 92

      Pages: 253109-253109

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dephasing of a Superconductiong Flux Qubit2007

    • Author(s)
      K. Kakuyanagi, T. Meno, S. Saito, H. Nakano, K. Semba, H. Takayanagi, F. Deppe, A. Shnirman
    • Journal Title

      Physical Review Letters 98

      Pages: 47004-47004

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Controllable Coupling between Flux Qubit and Nanomechanical Resonator by Magnetic Field2007

    • Author(s)
      Fei Xue, Y. D Wang, C.P. Sun, H. Okamoto, H. Yamaguchi, K. Semba
    • Journal Title

      New Journal of Physics 9

      Pages: 35-35

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Dephasing of a Superconductiong Flux Qubit2007

    • Author(s)
      K.Kakuyanagi, T.Meno, S.Saito, H.Nakano, K.Semba, H.Takayanagi, F.Deppe, A.Shnirman
    • Journal Title

      Physical Review Letters 98

      Pages: 47004-47004

    • Related Report
      2008 Self-evaluation Report
    • Peer Reviewed
  • [Journal Article] Cooling a micromechanical beam by coupling it to a transmission line2007

    • Author(s)
      Fei Xue, Y. D. Wang, Yu-xi Liu, and Franco Nori
    • Journal Title

      Phys. Rev. B 76

      Pages: 205302-205302

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Long range and selective coupler for superconducting flux qubits2007

    • Author(s)
      H. Nakano, K. Kakuyanagi, M. Ueda, K. Semba
    • Journal Title

      Appl. Phys. Lett. 91

      Pages: 32501-32501

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Controllable Coupling between Flux Qubit and Nanomechanical Resonator by Magnetic Field2007

    • Author(s)
      Fei Xue, Y.D Wang, C.P.Sun, H.Okamoto, H.Yamaguchi, K.Semba
    • Journal Title

      New Journal of Physics 9

      Pages: 35-35

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Dephasing of a superconducting flux qubit.2007

    • Author(s)
      K.Kakuyanagi, T.Meno, S.Saito, H.Nakano, K.Semba, H.Takayanagi, F.Deppe, A.Shnirman.
    • Journal Title

      Physical Review Letters 98

      Pages: 47004-47004

    • Related Report
      2006 Annual Research Report
  • [Presentation] Electromechanical logic gate2010

    • Author(s)
      I.Mahboob, E.Flurin, K.Nishiguchi, A.Fujiwara, H.Yamaguchi
    • Organizer
      2010 Gordon Research Conference : Mechanical Systems In The Quantum Regime
    • Place of Presentation
      Galveston, US
    • Year and Date
      2010-03-22
    • Related Report
      2009 Annual Research Report
  • [Presentation] Dynamics of a micromechanical resonator embedded in a dc-SQUID2010

    • Author(s)
      Samir Etaki
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-05
    • Related Report
      2009 Annual Research Report
  • [Presentation] What do you measure when you measure a superconducting qubit state with a SQUID as the probe?2010

    • Author(s)
      Hayato Nakano
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-05
    • Related Report
      2009 Annual Research Report
  • [Presentation] Optical control of nanomechanical vibration in GaAs resonators2010

    • Author(s)
      H.Okamoto
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-05
    • Related Report
      2009 Annual Research Report
  • [Presentation] Electromechanical logic gates via non-degenerate parametric down conversion2010

    • Author(s)
      I.Mahboob
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-05
    • Related Report
      2009 Annual Research Report
  • [Presentation] Quantum state engineering based on flux qubit and nanomechanical resonator2010

    • Author(s)
      Yingdan Wang
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] In-situ tuning the gap of a superconducting flux qubit2010

    • Author(s)
      Xiaobo Zhu
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Experimentally realizable controlled NOT gate in a flux qubit/resonator system2010

    • Author(s)
      Shiro Saito
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Mediation of entanglement between a microscopic two level system and a macroscopic superconducting resonator using a persistent current qubit2010

    • Author(s)
      Alexander Kemp
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Superconducting flux qubit readout using Josephson bifurcation amplifier2010

    • Author(s)
      Kousuke Kakuyanagi
    • Organizer
      Workshop on Quantum Physics using Superconducting Artificial Atoms and Nanomechanics
    • Place of Presentation
      NTT Atsugi R & D center(Kanagawa)
    • Year and Date
      2010-03-04
    • Related Report
      2009 Annual Research Report
  • [Presentation] Micro/Nanoelectromechanical Systems for Advanced Semiconductor Devices(招待講演)2010

    • Author(s)
      H.Yamaguchi, I.Mahboob, H.Okamoto, K.Onomitsu
    • Organizer
      2010 International RCIQE/CREST Joint Workshop
    • Place of Presentation
      Sapporo
    • Year and Date
      2010-03-02
    • Related Report
      2009 Annual Research Report
  • [Presentation] 超伝導磁束量子ビットを介した共振器と二準位Fluctuatorの結合2010

    • Author(s)
      S.Saito
    • Organizer
      物理学会(年次大会)
    • Place of Presentation
      Okayama, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Fast tuning the gap of a superconducting flux qubit2010

    • Author(s)
      X.Zhu
    • Organizer
      物理学会(年次大会)
    • Place of Presentation
      Okayama, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Piezoelectric displacement detection in a microelectromechanical resonator via a silicon field effect transistor2009

    • Author(s)
      I.Mahboob, K.Nishiguchi, A.Fujiwara, H.Yamaguchi
    • Organizer
      International Symposium on Advanced Nanodevices and Nanotechnology(ISANN2009)
    • Place of Presentation
      Hawaii, US
    • Year and Date
      2009-12-01
    • Related Report
      2009 Annual Research Report
  • [Presentation] シリコンFETを用いた室温における圧電効果変位検出2009

    • Author(s)
      Imran Mahboob, 西口克彦, 藤原聡, 山口浩司
    • Organizer
      第70回応用物理学会学術講演会
    • Place of Presentation
      富山大学
    • Year and Date
      2009-09-09
    • Related Report
      2009 Annual Research Report
  • [Presentation] Manipulating the dynamical potential well of a parametric resonator2009

    • Author(s)
      I.Mahboob, C.Froitier, H.Yamaguchi
    • Organizer
      14th International Conference on Modulated Semiconductor Structures(MSS14)
    • Place of Presentation
      Kobe
    • Year and Date
      2009-07-23
    • Related Report
      2009 Annual Research Report
  • [Presentation] Heterostructure-based Micro/Nanomechanical Systems(招待講演)2009

    • Author(s)
      H.Yamaguchi
    • Organizer
      18th International Conference on Electronic Properties of Two-Dimensional Systems(EP2DS18)
    • Place of Presentation
      Kobe
    • Year and Date
      2009-07-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] 超伝導磁束量子ビットにおけるテレグラフノイズの分光分析2009

    • Author(s)
      齋藤志郎, A. Kemp, 仙場浩一
    • Organizer
      日本物理学会 第64回年次大会
    • Place of Presentation
      東京
    • Year and Date
      2009-03-27
    • Related Report
      2008 Annual Research Report
  • [Presentation] Controlable persistent current in a superconducting flux qubit2009

    • Author(s)
      X. zhu, A. Kemp, S. Kagei, S. Saito, K. Semba.
    • Organizer
      日本物理学会 第64回年次大会
    • Place of Presentation
      東京
    • Year and Date
      2009-03-27
    • Related Report
      2008 Annual Research Report
  • [Presentation] Quantum Coherence and Readout of the Persistent Current Qubit2009

    • Author(s)
      S. Saito, A. Kemp, K. Kakuyanagi, S. Kagei, R. Koibuchi, H. Takanayagi, K. Semba.
    • Organizer
      ISNTT2009
    • Place of Presentation
      Atsugi, Japan
    • Year and Date
      2009-01-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] Quantum state control, entanglement, and readout of the Josephson persistent-current qubit2009

    • Author(s)
      K. Semba
    • Organizer
      The 3rd International Workshop and School on Solid State Based Quantum Information Processing (QIP 2009)
    • Place of Presentation
      Herrsching Munich, Germany(Invited talk)
    • Related Report
      2009 Final Research Report
  • [Presentation] Superconducting Qubit as an Entanglement Generator(招待講演)2009

    • Author(s)
      K.Semba
    • Organizer
      International Conference on Quantum Technologies : Information and Communication
    • Place of Presentation
      Waseda University, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Superconducting Qubit as an Entanglement Generator(招待講演)2009

    • Author(s)
      K.Semba
    • Organizer
      International Conference on Quantum Information and Technology National Institute of Informatics
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Control of Entanglement and Quantum Superposition of Superconducting Persistent Current Qubit Few Photon System(招待講演)2009

    • Author(s)
      K.Semba
    • Organizer
      22nd International Symposium on Superconductivity(ISS2009)
    • Place of Presentation
      Tsukuba, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Quantum state control, entanglement, and readout of the Josephson persistent-current qubit(招待講演)2009

    • Author(s)
      K.Semba
    • Organizer
      The 3rd International Workshop and School on Solid State Based Quantum Information Processing(QIP 2009)
    • Place of Presentation
      Herrsching Munich, Germany
    • Related Report
      2009 Annual Research Report
  • [Presentation] Decoherence in a superconducting flux qubit2009

    • Author(s)
      A.Kemp
    • Organizer
      ISEC2009
    • Place of Presentation
      Fukuoka, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Tunable gap flux qubit2009

    • Author(s)
      X.Zhu
    • Organizer
      ISEC2009
    • Place of Presentation
      Fukuoka, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] 最適磁束バイアスにおける磁束量子ビット共鳴線の非対称性2009

    • Author(s)
      S.Karimoto
    • Organizer
      ISEC2009
    • Place of Presentation
      Fukuoka, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] Non-switching readout of conducting flux qubit using Josephson bifurcation amplifier2009

    • Author(s)
      K.Kakuyanagi
    • Organizer
      ISEC2009
    • Place of Presentation
      Fukuoka, Japan
    • Related Report
      2009 Annual Research Report
  • [Presentation] ジョセフソン分岐増幅(JBA)回路による磁束量子ビット測定の進展2009

    • Author(s)
      K.Kakuyanagi
    • Organizer
      応物学会
    • Place of Presentation
      富山
    • Related Report
      2009 Annual Research Report
  • [Presentation] 超伝導量子ビット集団による共振器プラズモンの超放射の検討II2009

    • Author(s)
      K.Kakuyanagi
    • Organizer
      物理学会(秋季大会)
    • Place of Presentation
      熊本
    • Related Report
      2009 Annual Research Report
  • [Presentation] Time domain qubit state measurement by Josephson bifurcation amplifier2009

    • Author(s)
      K.Kakuyanagi
    • Organizer
      445^<th> Wilhelm and Else Heraeus Seminar
    • Place of Presentation
      Dab Honnef(Germany)
    • Related Report
      2009 Annual Research Report
  • [Presentation] Dynamics of a superconducting resonator coupled to a flux qubit2009

    • Author(s)
      A.Kemp
    • Organizer
      Quantum Measurement and Metrology with Solid State
    • Place of Presentation
      Dab Honnef(Germany)
    • Related Report
      2009 Annual Research Report
  • [Presentation] Readout flux qubit with the transmission line Josephson bifurcation amplifier2009

    • Author(s)
      K. Kakuyanagi, S. Kagei, R. Koibuchi, K. Semba.
    • Organizer
      ISNTT2009
    • Place of Presentation
      Atsugi, Japan
    • Related Report
      2008 Annual Research Report
  • [Presentation] Spectroscopic Examination of Fluctuation in a Superconducting Flux Qubit2009

    • Author(s)
      A. Kemp, S. Saito, K. Semba
    • Organizer
      ISNTT2009
    • Place of Presentation
      Atsugi, Japan
    • Related Report
      2008 Annual Research Report
  • [Presentation] Position detection and backaction of a mechanical resonator integrated in a dc SQUID detector2009

    • Author(s)
      M. Poot, S. Etaki, I. Mahboob, K. Onomitsu, H. Yamaguchi, Y. M. Blanter, H. S. J. van der Zant
    • Organizer
      ISNTT2009
    • Place of Presentation
      Atsugi, Japan
    • Related Report
      2008 Annual Research Report
  • [Presentation] Quantum Analysis on Superconducting Qubit Readout with a Josehson Bifurcation Amplifier2008

    • Author(s)
      H. Nakano, S. Saito, K. Semba, H. Takayanagi
    • Organizer
      Quantum Dynamics in Dots and Junctions ; Coherent Solid State Systems
    • Place of Presentation
      Riva del Garda, Italy
    • Year and Date
      2008-10-07
    • Related Report
      2008 Annual Research Report
  • [Presentation] Coupling superconducting flux qubits at optimal point via dynamic decoupling with the quantum bus2008

    • Author(s)
      Y. D. Wang, K. Semba.
    • Organizer
      日本物理学会 2008秋季大会
    • Place of Presentation
      岩手大
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] ジョセフソン分岐増幅による超伝導磁束量子ビット読み出しの試み2008

    • Author(s)
      角柳孝輔, 影井誠一郎, 鯉渕良太, 仙場浩一
    • Organizer
      日本物理学会 2008秋季大会
    • Place of Presentation
      岩手大
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] SQUID共振周波数測定による量子ビット読み出しの量子論II2008

    • Author(s)
      中ノ勇人
    • Organizer
      日本物理学会 2008秋季大会
    • Place of Presentation
      岩手大
    • Year and Date
      2008-09-22
    • Related Report
      2008 Annual Research Report
  • [Presentation] DC-SQUIDに組み込んだマイクロ機械共振器の変位計測2008

    • Author(s)
      Samir Etaki, M. Poot, I. Mahboob, 小野満恒二, H. S. J. Van Der Zant, 山口浩司
    • Organizer
      第69回応用物理学会学術講演会
    • Place of Presentation
      中部大学(春日井キャンパス)
    • Year and Date
      2008-09-03
    • Related Report
      2008 Annual Research Report
  • [Presentation] Quantum Evolution in a Josephson Bifurcation Amplifier during Qubit Readout Process2008

    • Author(s)
      H. Nakano, S. Saito, K. Semba, H. Takayanagi.
    • Organizer
      Quantum Communication, Measurement and Computation, CMC2008
    • Place of Presentation
      University of Calgary, Canada
    • Year and Date
      2008-08-21
    • Related Report
      2008 Annual Research Report
  • [Presentation] 超伝導量子回路を用いた cavity QED実験2008

    • Author(s)
      仙場浩一
    • Organizer
      第18回量子情報技術研究会(QIT18)
    • Place of Presentation
      東京大学 小柴ホール
    • Year and Date
      2008-05-23
    • Related Report
      2008 Annual Research Report
  • [Presentation] 超伝導量子ビット集団による共振器プラズモンの超放射の検討2008

    • Author(s)
      中ノ勇人,仙場浩一
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      東大阪市,日本
    • Year and Date
      2008-03-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] 磁束ノイズ耐性のある量子ビット構造2008

    • Author(s)
      山田義春,角柳孝輔,斎藤志郎,仙場浩一
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      東大阪市,日本
    • Year and Date
      2008-03-23
    • Related Report
      2007 Annual Research Report
  • [Presentation] 超伝導人工原子・マイクロ波単一光子の量子もつれ計測(招待講演)2008

    • Author(s)
      仙場浩一
    • Organizer
      JST-CRDS 俯瞰ワークショップ 「科学技術シーズを産業につなぐための先端計測」
    • Place of Presentation
      JST・社会技術研究開発センター(大手町)、東京
    • Year and Date
      2008-01-12
    • Related Report
      2007 Annual Research Report
  • [Presentation] Quantum control of the flux qubit coupled to microwave photon system.2008

    • Author(s)
      K. Semba
    • Organizer
      Int. Coference on Solid State Quantum Information
    • Place of Presentation
      SNS-Pisa, Italy(Invited talk)
    • Related Report
      2009 Final Research Report
  • [Presentation] Quantum control of the flux qubit coupled to microwave photon system2008

    • Author(s)
      K. Semba
    • Organizer
      Int. Coference on Solid State Quantum Information
    • Place of Presentation
      SNS-Pisa, Italy.
    • Related Report
      2008 Self-evaluation Report
  • [Presentation] Quantum control of the flux qubit coupled to microwave photon system.2008

    • Author(s)
      K. Semba
    • Organizer
      Int. Conference on Solid state quantum information
    • Place of Presentation
      SNS-Pisa, Italy
    • Related Report
      2008 Annual Research Report
  • [Presentation] Superconducting flux qubit.2008

    • Author(s)
      S. Saito, et al.
    • Organizer
      日独先端科学(JGFoS)シンポジウム、日本学術振興会、フンボルト財団 (Alexander von Humboldt-Foundation : AvH.
    • Place of Presentation
      マインツ, ドイツ
    • Related Report
      2008 Annual Research Report
  • [Presentation] Readout of superconducting flux qubit using Josephson bifurcation amplifier2008

    • Author(s)
      K. Kakuyanagi, S. Kagei, R. Koibuchi, K. Semba.
    • Organizer
      Int. Conference on Solid state quantum information
    • Place of Presentation
      SNS-Pisa, Italy
    • Related Report
      2008 Annual Research Report
  • [Presentation] Coupling superconducting flux qubits at degeneracy point by a dynamically decoupled quantum bus2008

    • Author(s)
      A. Kemp, Y. D. Wang, K. Semba.
    • Organizer
      Quantum Dynamics in Dots and Junctions ; Coherent Solid State Systems
    • Place of Presentation
      Riva del Garda Italy
    • Related Report
      2008 Annual Research Report
  • [Presentation] Dynamic Quantum Gate of Superconducting Flux Qubits at Optimal Point2008

    • Author(s)
      Y. D. Wang, K. Semba
    • Organizer
      Quantum Communication, Measurement and Computation, CMC2008
    • Place of Presentation
      University of Calgary, Canada
    • Related Report
      2008 Annual Research Report
  • [Presentation] A Primitive Consideration of Quantum Error Correction for Decoherence in Qubit System.2007

    • Author(s)
      H. Nakano
    • Organizer
      量子情報技術時限研究会(QIT17)
    • Place of Presentation
      Okayama, Japan
    • Year and Date
      2007-11-21
    • Related Report
      2007 Annual Research Report
  • [Presentation] GENERATION OF NON-CLASSICAL STATE OF AN LC RESONATOR COUPLEDTO A SUPERCONDUCTING FLUX QUBIT.2007

    • Author(s)
      K. Kakuyanagi, S. Saito, H. Nakano, K. Semba, S. Kagei, H. Takayanagi
    • Organizer
      International Symposium on Superconductivity 2007(ISS2007)
    • Place of Presentation
      Tsukuba, Japan
    • Year and Date
      2007-11-07
    • Related Report
      2007 Annual Research Report
  • [Presentation] Non-destructive quantum mesurement of a flux qubit(招待講演)2007

    • Author(s)
      S. Saito, A. Lupascu, T. Picot, P. C. de Groot, C. J. P. M. Harmans, J. E. Mooij
    • Organizer
      International Symposium on Superconductivity 2007(ISS2007)
    • Place of Presentation
      Tsukuba, Japan
    • Year and Date
      2007-11-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] Self-cooling of a Micro-mechanical Resonator by Lorentz Force.2007

    • Author(s)
      Y. D. Wang, K. Semba, H. Yamaguchi
    • Organizer
      International Symposium on Superconductivity 2007(ISS2007)
    • Place of Presentation
      Tsukuba, Japan
    • Year and Date
      2007-11-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] 非調和振動子による量子ビット読み出しの量子古典対応とデコヒーレンスII2007

    • Author(s)
      中ノ勇人,斎藤志郎
    • Organizer
      日本物理学会秋期大会
    • Place of Presentation
      札幌、日本
    • Year and Date
      2007-09-24
    • Related Report
      2007 Annual Research Report
  • [Presentation] Self-cooling of a Micro-mechanical Resonator by Lorentz Force.2007

    • Author(s)
      Y. D. Wang, K. Semba, H. Yamaguchi
    • Organizer
      日本物理学会秋期大会
    • Place of Presentation
      札幌、日本
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] 磁束量子ビットの周波数アドレス読み出しスキーム2007

    • Author(s)
      角柳孝輔,仙場浩一
    • Organizer
      日本物理学会秋期大会
    • Place of Presentation
      札幌、日本
    • Year and Date
      2007-09-22
    • Related Report
      2007 Annual Research Report
  • [Presentation] Quantum Behaviors in Josephson Bifurcation Readout of Flux Qubits.2007

    • Author(s)
      H. Nakano, S. Saito, K. Semba, H. Takayanagi
    • Organizer
      Asian Conference on Quantum Information Science(AQIS2007)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2007-09-06
    • Related Report
      2007 Annual Research Report
  • [Presentation] Self-cooling of a Micro-mechanical Resonator by Lorentz Force.2007

    • Author(s)
      Y. D. Wang, K. Semba, H. Yamaguchi
    • Organizer
      Asian Conference on Quantum Information Science(AQIS2007)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2007-09-04
    • Related Report
      2007 Annual Research Report
  • [Presentation] Non-classical excitation of an LC-resonator coupled to a superconducting flux qubit2007

    • Author(s)
      K. Kakuyanagi, S. Saito, H. Nakano, K. Semba, S. Kagei, H. Takayanagi
    • Organizer
      Asian Conference on Quantum Information Science(AQIS2007)
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      2007-09-03
    • Related Report
      2007 Annual Research Report
  • [Presentation] Josephson cavity-QED(招待講演)2007

    • Author(s)
      仙場浩一
    • Organizer
      JST-CREST「第3回量子情報未来テーマ開拓研究会」
    • Place of Presentation
      沖縄,日本
    • Year and Date
      2007-08-28
    • Related Report
      2007 Annual Research Report
  • [Presentation] ジョセフソン量子ビットを用いたcircuit QED(招待講演)2007

    • Author(s)
      仙場浩一
    • Organizer
      日本学術振興会 未踏・ナノデバイステクノロジー 第151委員会 研究会
    • Place of Presentation
      東京大学(本郷),東京
    • Year and Date
      2007-07-13
    • Related Report
      2007 Annual Research Report
  • [Presentation] Vacuum Rabi oscillations observed in a flux qubit LC-oscillator system W1.2007

    • Author(s)
      Kouichi Semba
    • Organizer
      0003: APS March Meeting 2007
    • Place of Presentation
      Denver, Colorado USA(Invited talk)
    • Related Report
      2009 Final Research Report
  • [Book] Physical Realizations of Quantum Computing(ISBN981-256-473-X)2006

    • Author(s)
      F. Wilhelm, K. Semba
    • Publisher
      World Scientific Pub Co Inc.
    • Related Report
      2009 Final Research Report
  • [Book] Physical Realizations of Quantum Computing2006

    • Author(s)
      F. Wilhelm, K. Semba
    • Publisher
      World Scientific Pub Co Inc., New Jersey, 2006 ISBN981-256-473-X.
    • Related Report
      2008 Self-evaluation Report
  • [Book] Physical Realizations of Quantum Computing2006

    • Author(s)
      F.Wilhelm, K.Semba
    • Publisher
      World Scientific Pub Co Inc, New Jersey, 2006 ISBN 981-256-473-X.
    • Related Report
      2006 Annual Research Report
  • [Remarks]

    • URL

      http://www.brl.ntt.co.jp/J/group_007/group_007.html

    • Related Report
      2009 Final Research Report
  • [Remarks]

    • URL

      http://www.brl.ntt.co.jp/J/group_007/group_007.html

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.brl.ntt.co.jp/J/group_005/group_005.html

    • Related Report
      2009 Annual Research Report
  • [Remarks]

    • URL

      http://www.brl.ntt.co.jp/group/butsucho-g/j/

    • Related Report
      2008 Annual Research Report
  • [Remarks]

    • URL

      http://www.brl.ntt.co.jp/group/butsucho-g/e/

    • Related Report
      2008 Annual Research Report
  • [Patent(Industrial Property Rights)] 超伝導非線形共振回路を用いた、測定回路の常伝導転移を伴わない、磁束量子ビットの高速非熱的状態測定装置2009

    • Inventor(s)
      角柳孝輔, 仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Industrial Property Number
      2009-121380
    • Filing Date
      2009-05-19
    • Related Report
      2009 Annual Research Report 2009 Final Research Report
  • [Patent(Industrial Property Rights)] 素子状態読み出し装置、方法、および透過型ジョセフソン共振回路2009

    • Inventor(s)
      角柳孝輔、仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Acquisition Date
      2009-03-05
    • Related Report
      2009 Final Research Report
  • [Patent(Industrial Property Rights)] 素子状態読み出し装置、方法、および透過型ジョセフソン共振回路2009

    • Inventor(s)
      角柳孝輔、仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Patent Publication Number
      2009-049631
    • Acquisition Date
      2009-03-05
    • Related Report
      2008 Self-evaluation Report
  • [Patent(Industrial Property Rights)] 素子状態読み出し装置、方法、および透過型ジョセフソン共振回路2009

    • Inventor(s)
      角柳孝輔, 仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Patent Publication Number
      2009-049631
    • Filing Date
      2009-03-05
    • Related Report
      2008 Annual Research Report
  • [Patent(Industrial Property Rights)] 検出素子および検出方法2008

    • Inventor(s)
      岡本創, 山口浩司, 仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Patent Publication Number
      2008-076082
    • Filing Date
      2008-04-03
    • Related Report
      2008 Annual Research Report
  • [Patent(Industrial Property Rights)] 特許「素子状態読み出し装置、方法、および透過型ジョセフソン共振回路」2007

    • Inventor(s)
      角柳孝輔, 仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Industrial Property Number
      2007-212733
    • Filing Date
      2007-08-17
    • Related Report
      2008 Self-evaluation Report
  • [Patent(Industrial Property Rights)] 特許「素子状態読み出し装置、方法、および透過型ジョセフソン共振回路」2007

    • Inventor(s)
      角柳孝輔,仙場浩一
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Filing Date
      2007-08-17
    • Related Report
      2007 Annual Research Report
  • [Patent(Industrial Property Rights)] 量子計算装置および量子もつれ制御方法2006

    • Inventor(s)
      角柳孝輔, 中ノ勇人, 仙場浩一, 上田正仁
    • Industrial Property Rights Holder
      日本電信電話株式会社
    • Industrial Property Number
      2006-221435
    • Filing Date
      2006-08-05
    • Related Report
      2006 Annual Research Report

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Published: 2006-04-01   Modified: 2016-04-21  

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