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Connection between entanglement and the speed of quantum evolution

AuthorsBatle, Josep; Casas, Montserrat ; Plastino, Ángel R.; Plastino, A.
KeywordsQuantum entanglement
Quantum computing
Information theory
Issue Date29-Sep-2005
PublisherAmerican Physical Society
CitationPhysical Review A 72, 032337 (2005)
AbstractIt has been recently pointed out [V. Giovannetti, S. Lloyd, and L. Maccone, Europhys. Lett. 62, 615 (2003)] that, for certain classes of states, quantum entanglement enhances the "speed" of evolution of composite quantum systems, as measured by the time a given initial state requires to evolve to an orthogonal state. We provide here a systematic study of this effect for pure states of bipartite systems of low dimensionality, considering both distinguishable two-qubits subsystems, and systems constituted of two indistinguishable particles.
Description5 pages, 3 figures.-- PACS nrs.: 03.67.Mn, 89.70.+c, 03.65.-w, 02.50.-r.-- ArXiv pre-print available at: http://arxiv.org/abs/quant-ph/0507030v1
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevA.72.032337
Appears in Collections:(IFISC) Artículos
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