"Decoherence of quantum superpositions through coupling to engineered reservoirs" is the topic of a recent article by Myatt et al. [Nature { \underline{ 403}}, 269 (2000)] which has attracted much interest because of its relevance to current research in fundamental quantum theory, quantum computation, teleportation, entanglement and the quantum-classical interface. However, the preponderance of theoretical work on decoherence does not consider the effect of an { \underline{ external field}}. Here, we present an analysis of such an effect in the case of the random delta-correlated force discussed by Myatt et al.
Categories: quant-ph