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2014 Fiscal Year Annual Research Report

エレクトロメカニクスにおける量子操作及び情報処理

Research Project

Project/Area Number 12F02503
Research InstitutionThe Institute of Physical and Chemical Research

Principal Investigator

NORI FRANCO  独立行政法人理化学研究所, 創発物性科学研究センター, グループディレクター

Co-Investigator(Kenkyū-buntansha) LIAO Jieqiao  独立行政法人理化学研究所, 創発物性科学研究センター, 外国人特別研究員
Keywordsoptomechanics / electromechanics / ultrastrong coupling / coupling enhancement / quantum entanglement / quantum state tomography / single-photon emission / scattering
Outline of Annual Research Achievements

During FY 2014, we have published four papers, which focus on the ultrastrong coupling regime for linear and quadratic optomechanics.
The detailed descriptions are :
(1) We showed that the strength of optical Kerr-nonlinearity, as well as the effect of the photon-pressure force in electromechanics, can be enormously increased by modulating the strength of the nonlinear coupling. We also described an electromechanical circuit where this enhancement could be readily realized [New J. Phys. 16, 072001 (2014)].
(2) We proposed a method to generate quantum entanglement between two macroscopic mechanical resonators in a two-cavity optomechanical system [Phys. Rev. A 89, 014302 (2014)].
(3) We proposed a spectrometric method to reconstruct the motional states of mechanical modes in optomechanics [Phys. Rev. A 90, 023851 (2014)].
(4) We studied single-photon emission and scattering in quadratic optomechanics. We also studied the photon-phonon entanglement created in the emission and scattering processes [Scientific Reports 4, 6302 (2014)].

Research Progress Status

本研究課題は平成26年度が最終年度のため、記入しない。

Strategy for Future Research Activity

本研究課題は平成26年度が最終年度のため、記入しない。

  • Research Products

    (8 results)

All 2014

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (3 results) (of which Invited: 1 results)

  • [Journal Article] Entangling two macroscopic mechanical mirrors in a two-cavity optomechanical system2014

    • Author(s)
      Jie-Qiao Liao, Qin-Qin Wu, and Franco Nori
    • Journal Title

      Phys. Rev. A

      Volume: 89 Pages: 014302-1-5

    • DOI

      10.1103/PhysRevA.89.014302

    • Peer Reviewed
  • [Journal Article] Spectrometric reconstruction of mechanical-motional states in ontomechanics2014

    • Author(s)
      Jie-Qiao Liao and Franco Nori
    • Journal Title

      Phys. Rev. A

      Volume: 90 Pages: 023851-1-9

    • DOI

      10.1103/PhysRevA.90.023851

    • Peer Reviewed
  • [Journal Article] Single-photon quadratic optomechanics2014

    • Author(s)
      Jie-Qiao Liao, Franco Nori
    • Journal Title

      Scientific Reports

      Volume: 4 Pages: 6302-1-9

    • DOI

      10.1038/srep06302

    • Peer Reviewed
  • [Journal Article] Modulated electromechanics : large enhancements of nonlinearities2014

    • Author(s)
      Jie-Qiao Liao, Kurt Jacobs, Franco Nori, Raymond W Simmonds
    • Journal Title

      New J. Phys

      Volume: 16 Pages: 072001-1-10

    • DOI

      10.1088/1367-2630/16/7/072001

    • Peer Reviewed
  • [Journal Article] Enhanced interferometry using squeezed thermal states and even or odd states2014

    • Author(s)
      Qing-Shou Tan, Jie-Qiao Liao, Xiaoguang Wang, and Franco Nori
    • Journal Title

      Phys. Rev. A

      Volume: 89 Pages: 053822-1-7

    • DOI

      10.1038/srep06302

    • Peer Reviewed
  • [Presentation] Few-photon physics in optomechanics2014

    • Author(s)
      J.Q. Liao
    • Organizer
      Seminar at Hunan Normal University
    • Place of Presentation
      Hunan Normal University, Changsha, Hunan, China
    • Year and Date
      2014-10-16
    • Invited
  • [Presentation] RIKEN Symposium on Nano science and condensed matter physics2014

    • Author(s)
      J.Q. Liao
    • Organizer
      RIKEN Symposium on Nano science and condensed matter physics
    • Place of Presentation
      RIKEN, 埼玉県和光市
    • Year and Date
      2014-10-10
  • [Presentation] Spectrometric reconstruction of mechanical-motional states in ontomechanics2014

    • Author(s)
      J.Q. Liao
    • Organizer
      RIKEN Symposium on quantum information
    • Place of Presentation
      RIKEN, 埼玉県和光市
    • Year and Date
      2014-07-14

URL: 

Published: 2016-06-01  

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