Quantum Inf Process (2009) 8:477–478 DOI 10.1007/s11128-009-0145-6 Bei Lok Hu · Ting Yu Published online: 30 September 2009 © Springer Science+Business Media, LLC 2009 Realistic quantum systems designed for quantum information processing (QIP) cannot avoid interactions with their environments, which can alter their quantum coherence and entanglement properties. Environment-induced quantum decoherence provides a way to understand how a quantum system acquires classical behavior. But this very process undermines the effectiveness or even feasibility of QIP and is thus of primary concern in the actual design of quantum computers. Investigation of quantum entan- glement is both of practical and theoretical significance: It is viewed as a basic resource for QIP and it is, in the words of Schroedinger, the uniquely quantum feature of quan- tum mechanics. Mastering how entanglement in a quantum system interacting with an environment evolves in time is also of vital importance for QIP as is the relation between decoherence and disentanglement. Environment-induced decoherence in the context of QIP has been under study for over a decade and investigation of environment-induced disentanglement has seen a rapid increase in recent years. In view of the fast development and conﬂuence of these two subjects of fundamental and practical importance
Quantum Information Processing – Springer Journals
Published: Sep 30, 2009
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