Decoherence of quantum-nondemolition systems

作者:Shao JS*; Ge ML; Cheng H
来源:Physical Review E, 1996, 53(1): 1243-1245.
DOI:10.1103/PhysRevE.53.1243

摘要

The density matrices of a generic quantum-nondemolition system coupled to the reservoir of an infinite number of harmonic oscillators and to the reservoir of an infinite number of two-level systems are evaluated exactly. It is found that quantum decoherence is independent of temperature in the latter case.