Nonexponential decoherence and momentum subdiffusion in a quantum Lévy kicked rotator

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dc.creatorSchomerus, Henning
dc.creatorLutz, Eric
dc.date2006-11-15
dc.date.accessioned2026-07-07T08:21:26Z
dc.date.available2026-07-07T08:21:26Z
dc.descriptionWe investigate decoherence in the quantum kicked rotator (modelling cold atoms in a pulsed optical field) subjected to noise with power-law tail waiting-time distributions of variable exponent (Levy noise). We demonstrate the existence of a regime of nonexponential decoherence where the notion of a decoherence rate is ill-defined. In this regime, dynamical localization is never fully destroyed, indicating that the dynamics of the quantum system never reaches the classical limit. We show that this leads to quantum subdiffusion of the momentum, which should be observable in an experiment.
dc.description4 pages, 1 figure
dc.identifierhttps://arxiv.org/abs/quant-ph/0611162
dc.identifierhttp://arxiv.org/abs/quant-ph/0611162
dc.identifierPhys. Rev. Lett. 98, 260401 (2007)
dc.identifierdoi:10.1103/PhysRevLett.98.260401
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/135357
dc.subjectQuantum Physics
dc.subjectMesoscale and Nanoscale Physics
dc.subjectChaotic Dynamics
dc.titleNonexponential decoherence and momentum subdiffusion in a quantum Lévy kicked rotator
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