Cavity optomechanical detection of persistent currents and solitons in a bosonic ring condensate

  • Nalinikanta Pradhan
    Department of Physics, Indian Institute of Technology, Guwahati 781039, Assam, India
  • Pardeep Kumar
    Max Planck Institute for the Science of Light, Staudtstraße 2, 91058 Erlangen, Germany
  • Rina Kanamoto
    Department of Physics, Meiji University, Kawasaki, Kanagawa 214-8571, Japan
  • Tarak Nath Dey
    Department of Physics, Indian Institute of Technology, Guwahati 781039, Assam, India
  • M. Bhattacharya
    School of Physics and Astronomy, Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, New York 14623, USA
  • Pankaj Kumar Mishra
    Department of Physics, Indian Institute of Technology, Guwahati 781039, Assam, India

書誌事項

公開日
2024-01-26
資源種別
journal article
権利情報
  • https://creativecommons.org/licenses/by/4.0/
DOI
  • 10.1103/physrevresearch.6.013104
  • 10.48550/arxiv.2306.06720
公開者
American Physical Society (APS)

説明

<jats:p>We present numerical simulations of the cavity optomechanical detection of persistent currents and bright solitons in an atomic Bose-Einstein condensate confined in a ring trap. This paper describes a technique that measures condensate rotation , in real time, and with minimal destruction, in contrast to currently used methods, all of which destroy the condensate completely. For weakly repulsive interatomic interactions, the analysis of persistent currents extends our previous few-mode treatment of the condensate [P. Kumar ] to a stochastic Gross-Pitaevskii simulation. For weakly attractive atomic interactions, we present the first analysis of optomechanical detection of matter-wave soliton motion. We provide optical cavity transmission spectra containing signatures of the condensate rotation, sensitivity as a function of the system response frequency, and atomic density profiles quantifying the effect of the measurement backaction on the condensate. We treat the atoms at a mean-field level and the optical field classically, account for damping and noise in both degrees of freedom, and investigate the linear as well as nonlinear response of the configuration. Our results are consequential for the characterization of rotating matter waves in studies of atomtronics, superfluid hydrodynamics, and matter-wave soliton interferometry.</jats:p> <jats:sec> <jats:title/> <jats:supplementary-material> <jats:permissions> <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement> <jats:copyright-year>2024</jats:copyright-year> </jats:permissions> </jats:supplementary-material> </jats:sec>

収録刊行物

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