Bose-Einstein condensation of photons in microcavity plasmas

Abstract

Bose--Einstein condensation of a finite number of photons propagating inside a plasma-filled microcavity is investigated. The nonzero chemical potential is provided by the electrons, which induces a finite photon mass allowing condensation to occur. We derive an equation that models the evolution of the photon-mode occupancies, with Compton scattering taken into account as the mechanism of thermalization. The kinetic evolution of the photon spectrum is solved numerically, and we find evidences of condensation for realistic plasma densities, $n_e\sim 10^{14}-10^{15}{\text{cm}}^{-3}$, compatible with microplasma technology. The critical temperature is almost linear in the number of photons, and we find high condensate fractions at microcavity-plasma temperatures, for experimentally reasonable cavity lengths ($100-500\mu$m) and photon numbers ($10^{10}-10^{12}$).

References in corpus (4)

• Bose-Einstein condensation of photons in an optical microcavity
• Thermalisation of a two-dimensional photonic gas in a 'white-wall' photon box
• Experimental Evidence for Inhomogeneous-Pumping and Energy-Dependent Effects in Photon Bose-Einstein Condensation
• Hierarchical maximum entropy principle for generalized superstatistical systems and Bose-Einstein condensation of light

Cited by in corpus (2)

• Bose-Einstein Condensation of Photons in a Four-Site Quantum Ring
• Supersolid light in a semiconductor microcavity