Quantum parallelism as a tool for ensemble spin dynamics calculations

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dc.creatorAlvarez, Gonzalo A.
dc.creatorDanieli, Ernesto P.
dc.creatorLevstein, Patricia R.
dc.creatorPastawski, Horacio M.
dc.date2007-10-19
dc.date2008-05-19
dc.date.accessioned2026-07-07T10:03:54Z
dc.date.available2026-07-07T10:03:54Z
dc.descriptionEfficient simulations of quantum evolutions of spin-1/2 systems are relevant for ensemble quantum computation as well as in typical NMR experiments. We propose an efficient method to calculate the dynamics of an observable provided that the initial excitation is "local". It resorts a single entangled pure initial state built as a superposition, with random phases, of the pure elements that compose the mixture. This ensures self-averaging of any observable, drastically reducing the calculation time. The procedure is tested for two representative systems: a spin star (cluster with random long range interactions) and a spin ladder.
dc.description5 pages, 3 figures, improved version of the manuscript
dc.identifierhttps://arxiv.org/abs/0710.3747
dc.identifierhttp://arxiv.org/abs/0710.3747
dc.identifierPhys. Rev. Lett. 101, 120503 (2008)
dc.identifierdoi:10.1103/PhysRevLett.101.120503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169463
dc.subjectQuantum Physics
dc.subjectMesoscale and Nanoscale Physics
dc.subjectChemical Physics
dc.titleQuantum parallelism as a tool for ensemble spin dynamics calculations
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