Heidelberg 2015 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 17: Quantum Effects: Entanglement and Decoherence II

Q 17.5: Vortrag

Dienstag, 24. März 2015, 12:00–12:15, B/gHS

Dynamics of the quantum kicked oscillator in a heat bath — •Pablo Carlos Lopez¹ and Thomas Gorin² — ¹Max-Planck-Institut für Physik komplexer Systeme, D-01187 Dresden, Germany — ²Departamento de Física, Universidad de Guadalajara, 44840, Guadalajara, Jalisco, México.

We discuss the dynamics of a quantum harmonic oscillator under the influence of two different external forces. The first are kicks which are periodically applied to the oscillator and the second one is a surrounding heat bath to which the oscillator is in contact with. It is known that the kicks alone can drive the system into a diffusive regime if the period of the kicks is chosen to be commensurable with the period of the oscillator and localization phenomena can occur if the kicks are done with a incommensurable manner with respect to that of the oscillator. On the other hand the effect of being in contact with the heat bath alone will produce a relaxation process to a thermal equilibrium state. The different regimes of the dynamics of the oscillator under the influence of these two mechanisms is what we present here.