Bose-Einstein condensation of terahertz photons in an optical microcavity with Landau-quantized electrons
Phys. Rev. B 112, 155304 – Published 15 October, 2025
DOI: https://doi.org/10.1103/mhkt-4l4h
Abstract
We present a theoretical model for a coherent terahertz radiation source based on Bose-Einstein condensate of incoherently pumped microcavity photons. Energy relaxation is provided by inelastic photon scattering on a two-dimensional electron gas in a magnetic field. The proposed setup evades the standard lasing mechanisms: neither population inversion nor light wave amplification is utilized. We study the kinetics of photon condensation and describe a semiconductor-crystal-based device.
