Coupled Ito equations of continuous quantum state measurement, and estimation

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dc.creatorDiosi, Lajos
dc.creatorKonrad, Thomas
dc.creatorScherer, Artur
dc.creatorAudretsch, Juergen
dc.date2006-08-11
dc.date2006-09-15
dc.date.accessioned2026-07-07T07:26:26Z
dc.date.available2026-07-07T07:26:26Z
dc.descriptionWe discuss a non-linear stochastic master equation that governs the time-evolution of the estimated quantum state. Its differential evolution corresponds to the infinitesimal updates that depend on the time-continuous measurement of the true quantum state. The new stochastic master equation couples to the two standard stochastic differential equations of time-continuous quantum measurement. For the first time, we can prove that the calculated estimate almost always converges to the true state, also at low-efficiency measurements. We show that our single-state theory can be adapted to weak continuous ensemble measurements as well.
dc.description5 pages, RevTeX4. In version v2 some minor revisions and clarifications have been incorporated. Moreover, a new reference has been included. Accepted for publication in Journal of Physics A: Mathematical and General
dc.identifierhttps://arxiv.org/abs/quant-ph/0608097
dc.identifierhttp://arxiv.org/abs/quant-ph/0608097
dc.identifierJ. Phys. A: Math. Gen. 39 (2006) L575-L581
dc.identifierdoi:10.1088/0305-4470/39/40/L01
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/117075
dc.subjectQuantum Physics
dc.titleCoupled Ito equations of continuous quantum state measurement, and estimation
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