Bose–Einstein condensation and superfluidity of trapped photons with coordinate-dependent mass and interactions

ORAL

Abstract

The condensate density profile of trapped two-dimensional gas of photons in an optical microcavity, filled by a dye solution, is obtained by taking into account coordinate dependence effective mass of cavity photons and photon–photon coupling parameter [1]. The profiles for the densities of the superfluid and normal phases of trapped photons in the different regions of the system at the fixed temperature are analyzed. The radial dependencies of local mean-field phase transition temperature and local Kosterlitz-Thouless transition temperature of superfluidity for trapped microcavity photons are demonstrated. The coordinate dependence of cavity photon effective mass and photon–photon coupling parameter is important for the mirrors of smaller radius with the high trapping frequency, which provides Bose-Einstein condensation and superfluidity for smaller critical number of photons at the same temperature. We discuss a possibility of an experimental study of the density profiles for the normal and superfluid components in the system under consideration.

[1] O. L. Berman, R. Ya. Kezerashvili, Yu. E. Lozovik, J. Opt. Soc. Am. B 34, 1649 (2017).

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Presenters

  • Oleg Berman

    Physics, New York City College of Technology, City University of New York, Physics Department, New York City College of Technology of CUNY, Physics Department, New York City College of Technology, City University of New York

Authors

  • Oleg Berman

    Physics, New York City College of Technology, City University of New York, Physics Department, New York City College of Technology of CUNY, Physics Department, New York City College of Technology, City University of New York

  • Roman Kezerashvili

    Physics, New York City College of Technology, City University of New York, Physics Department, New York City College of Technology of CUNY, Physics Department, New York City College of Technology, City University of New York

  • Yurii Lozovik

    Institute of Spectroscopy