Decoherence without classicality in the resonant quantum kicked rotor

Details Decoherence without classicality in the resonant quantum kicked rotor Decoherence without classicality in the resonant quantum kicked rotor

2009-05-05

arxiv.org/abs/0905.0703v2

Physics

Quantum Physics

5 pages

Scientific paper

We study the quantum kicked rotor in resonance subjected to an unitary noise defined through Kraus operators, we show that this type of decoherence does not, in general, lead to the classical diffusive behavior. We find exact analytical expressions for the density matrix and the variance in the primary resonances. The variance does not loose its ballistic behavior, however the coherence decays as a power law. The secondary resonances are treated numerically, obtaining a power-law decay for the variance and an exponential law decay for the coherence.

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