Quantum Physics using Superconducting Artificial Atoms

2008 Fiscal Year Self-evaluation Report

• Project/Area Number: 18201018
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanostructural science
• Research Institution: NTT 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)
• Project Period (FY): 2006 – 2009
• Keywords: 量子情報

Research Abstract

超伝導人工原子を用いることにより通常の原子を用いた量子光学実験では到達不可能な条件下での量子物理実験の実施、および超伝導人工原子技術をナノメカニクス加工技術と組み合わせることにより、量子レベルでのナノ構造体の振動量子検出・制御や、新たな量子情報担体の可能性を追求すること.

Research Products

• [Journal Article] Entanglement, and Readout of the Josephson Persistent-Current Qubit (2009)
  • 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
  • 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
  • Peer Reviewed
• [Journal Article] Motion detection of a micromechanical resonator embedded in a dc-SQUID (2008)
  • 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
  • Peer Reviewed
• [Journal Article] Dephasing of a Superconductiong 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: 047004
  • Peer Reviewed
• [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.
  • Year and Date: 20081203-06
• [Book] Physical Realizations of Quantum Computing (2006)
  • Author(s): F. Wilhelm, K. Semba
  • Total Pages: 38-107
  • Publisher: World Scientific Pub Co Inc., New Jersey, 2006 ISBN981-256-473-X.
• [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: 特開2009-49631, P2009-49631A
  • Acquisition Date: 2009-03-05
• [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: 特願2007-212733
  • Filing Date: 2007-08-17