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International Conference on Quantum Information

Universal Dynamical Control of Decoherence and Thermodynamics

Goren Gordon, Noam Erez A, Gershon Kurizki

Published Jan 1, 2007• 0 citations
Publisher

Abstract

Universal formulae yield driving-field spatiotemporal profiles that minimize multipartite decoherence and disentanglement in thermal environments. They also allow entropy- and heat-flow control on non-Markovian time scales.
DOI
10.1364/icqi.2007.iwb2

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Entanglement is very susceptible to decoherence and can rapidly decay or even completely disappear in finite time. A universal dynamical control of the disentanglement approach is presented, whereby one locally modulates entangled systems weakly coupled to thermal baths. We show that these local modulations can reduce the entanglement's decay rate and may facilitate controlled oscillations of entanglement that result in entanglement partial resuscitation. In the case of separate systems, we show that controlling the asymmetry between the systems' decoherence rates may result in partial resuscitation in non-Markovian time scales. Furthermore, controlling the time-dependent cross-decoherence of systems coupled to the same bath may exhibit partial resuscitation on longer time scales, dictated by the local modulations.