2005/03/31 by Ting Yu, J. H. Eberly · 2 citations
Physics and Astronomy · #quant-ph
published as Quantum Information and Computation 7, 459-468 (2007) · 11 pages, 2 figures, version 3, some minor changes have been made
arxiv created 2007/01/02 · arxiv updated 2009/12/01
We examine a class of bipartite mixed states which we call X states and report several analytic results related to the occurrence of so-called entanglement sudden death (ESD) under time evolution in the presence of common types of environmental noise. Avoidance of sudden death by application of purely local operations is shown to be feasible in some cases.