Entropies and entanglement for decoherence without energy relaxation in a two-level atom
A.‐S. F. Obada, H. A. Hessian, A-B A Mohamed · Journal of Physics B Atomic Molecular and Optical Physics · 2007
In this paper, we investigate the temporal evolution of various measures of degree of entanglement and total correlation of a single-mode light field interacting with a two-level atom. The phase-damped cavity is taken into account. The effects of phase damping on a temporal of partial entropies for the atom and the field, total entropy, the entropy difference and the sum of negative eigenvalues of the partially transposed density matrix as a quantitative entanglement measure for the master equation in the dressed-state approximation are taken into account.