Density matrix for photons in a phase-sensitive reservoir
Ho Trung Dung, L. Knöll · Journal of Modern Optics · 1999
The transient behaviour of the density matrix for a radiation field in a single-mode cavity coupled to a phase-sensitive reservoir is considered using the Fokker-Planck equation approach. The matrix elements of the density operator in the number state basis and the antinormally ordered correlation functions are derived in terms of the initial density matrix elements. Limiting cases of the reservoir state and the cavity-field initial state are investigated and numerical examples are given.