Nonclassicality of noisy quantum states

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dc.creatorSemenov, A. A.
dc.creatorVasylyev, D. Yu.
dc.creatorLev, B. I.
dc.date2005-12-26
dc.date2006-02-03
dc.date.accessioned2026-07-07T06:56:45Z
dc.date.available2026-07-07T06:56:45Z
dc.descriptionNonclassicality conditions for an oscillator-like system interacting with a hot thermal bath are considered. Nonclassical properties of quantum states can be conserved up to a certain temperature threshold only. In this case, affection of the thermal noise can be compensated via transformation of an observable, which tests the nonclassicality (witness function). Possibilities for experimental implementations based on unbalanced homodyning are discussed. At the same time, we demonstrate that the scheme based on balanced homodyning cannot be improved for noisy states with proposed technique and should be applied directly.
dc.description15 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/quant-ph/0512236
dc.identifierhttp://arxiv.org/abs/quant-ph/0512236
dc.identifierJ. Phys. B: At. Mol. Opt. Phys. 39 (2006) 905-916
dc.identifierdoi:10.1088/0953-4075/39/4/014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/106759
dc.subjectQuantum Physics
dc.titleNonclassicality of noisy quantum states
dc.typetext

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