Bose-Einstein condensation of light: general theory
| Autor: | Denis Nikolaevich Sob’yanin (Денис Николаевич Собьянин) |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Quantum Physics Mesoscopic physics Photon Statistical Mechanics (cond-mat.stat-mech) Condensed Matter::Other Photon gas Physics::Optics FOS: Physical sciences Optical microcavity law.invention law Quantum Gases (cond-mat.quant-gas) Quantum mechanics Photon polarization Master equation Nonclassical light Condensed Matter - Quantum Gases Quantum Physics (quant-ph) Condensed Matter - Statistical Mechanics Bose–Einstein condensate Physics - Optics Optics (physics.optics) |
| Zdroj: | Physical review. E, Statistical, nonlinear, and soft matter physics. 88(2) |
| ISSN: | 1550-2376 |
| Popis: | A theory of Bose-Einstein condensation of light in a dye-filled optical microcavity is presented. The theory is based on the hierarchical maximum entropy principle and allows one to investigate the fluctuating behavior of the photon gas in the microcavity for all numbers of photons, dye molecules, and excitations at all temperatures, including the whole critical region. The master equation describing the interaction between photons and dye molecules in the microcavity is derived and the equivalence between the hierarchical maximum entropy principle and the master equation approach is shown. The cases of a fixed mean total photon number and a fixed total excitation number are considered, and a much sharper, nonparabolic onset of a macroscopic Bose-Einstein condensation of light in the latter case is demonstrated. The theory does not use the grand canonical approximation, takes into account the photon polarization degeneracy, and exactly describes the microscopic, mesoscopic, and macroscopic Bose-Einstein condensation of light. Under certain conditions, it predicts sub-Poissonian statistics of the photon condensate and the polarized photon condensate, and a universal relation takes place between the degrees of second-order coherence for these condensates. In the macroscopic case, there appear a sharp jump in the degrees of second-order coherence, a sharp jump and kink in the reduced standard deviations of the fluctuating numbers of photons in the polarized and whole condensates, and a sharp peak, a cusp, of the Mandel parameter for the whole condensate in the critical region. The possibility of nonclassical light generation in the microcavity with the photon Bose-Einstein condensate is predicted. Comment: 23 pages, 14 figures |
| Databáze: | OpenAIRE |
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