| ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Statistical properties of ideal photons in a two-dimensional dye-filled spherical cap cavity |
| Ze Cheng(成泽)† |
| School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract Within the framework of quantum statistical mechanics, we have proposed an exact analytical solution to the problem of Bose-Einstein condensation (BEC) of harmonically trapped two-dimensional (2D) ideal photons. We utilize this analytical solution to investigate the statistical properties of ideal photons in a 2D dye-filled spherical cap cavity. The results of numerical calculation of the analytical solution agree completely with the foregoing experimental results in the BEC of harmonically trapped 2D ideal photons. The analytical expressions of the critical temperature and the condensate fraction are derived in the thermodynamic limit. It is found that the 2D critical photon number is larger than the one-dimensional (1D) critical photon number by two orders of magnitude. The spectral radiance of a 2D spherical cap cavity has a sharp peak at the frequency of the cavity cutoff when the photon number exceeds the critical value determined by a temperature.
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Received: 27 May 2024
Revised: 29 July 2024
Accepted manuscript online: 08 August 2024
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PACS:
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42.50.-p
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(Quantum optics)
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03.75.Hh
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(Static properties of condensates; thermodynamical, statistical, and structural properties)
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67.85.Hj
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(Bose-Einstein condensates in optical potentials)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10174024 and 10474025). |
Corresponding Authors:
Ze Cheng
E-mail: zcheng@mail.hust.edu.cn
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Cite this article:
Ze Cheng(成泽) Statistical properties of ideal photons in a two-dimensional dye-filled spherical cap cavity 2024 Chin. Phys. B 33 104206
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