Nonadiabatic coherent evolution of two-level systems under spontaneous decay

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dc.creatorPrado, F. O.
dc.creatorDuzzioni, E. I.
dc.creatorMoussa, M. H. Y.
dc.creatorde Almeida, N. G.
dc.creatorVillas-Boas, C. J.
dc.date2008-03-26
dc.date.accessioned2026-07-07T12:46:53Z
dc.date.available2026-07-07T12:46:53Z
dc.descriptionIn this paper we extend current perspectives in engineering reservoirs by producing a time-dependent master equation leading to a nonstationary superposition equilibrium state that can be nonadiabatically controlled by the system-reservoir parameters. Working with an ion trapped inside a nonindeal cavity we first engineer effective Hamiltonians that couple the electronic states of the ion with the cavity mode. Subsequently, two classes of decoherence-free evolution of the superposition of the ground and decaying excited levels are achieved: those with time-dependent azimuthal or polar angle. As an application, we generalise the purpose of an earlier study [Phys. Rev. Lett. 96, 150403 (2006)], showing how to observe the geometric phases acquired by the protected nonstationary states even under a nonadiabatic evolution.
dc.description5 pages, no figures
dc.identifierhttps://arxiv.org/abs/0803.3709
dc.identifierhttp://arxiv.org/abs/0803.3709
dc.identifierPhys. Rev. Lett. 102, 073008 (2009)
dc.identifierdoi:10.1103/PhysRevLett.102.073008
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/221536
dc.subjectQuantum Physics
dc.titleNonadiabatic coherent evolution of two-level systems under spontaneous decay
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