We study the dynamics of the entanglement between two qubits coupled to a common chaotic environment, described by the quantum kicked rotator model. We show that the kicked rotator, which is a single-particle deterministic dynamical system, can reproduce the effects of a pure dephasing many-body bath. Indeed, in the semiclassical limit the interaction with the kicked rotator can be described as a random phase kick, so that decoherence is induced in the two-qubit system. We also show that our model can efficiently simulate non-Markovian environments. © 2006 The American Physical Society.

Conservative chaotic map as a model of quantum many-body environment

ROSSINI, DAVIDE;
2006-01-01

Abstract

We study the dynamics of the entanglement between two qubits coupled to a common chaotic environment, described by the quantum kicked rotator model. We show that the kicked rotator, which is a single-particle deterministic dynamical system, can reproduce the effects of a pure dephasing many-body bath. Indeed, in the semiclassical limit the interaction with the kicked rotator can be described as a random phase kick, so that decoherence is induced in the two-qubit system. We also show that our model can efficiently simulate non-Markovian environments. © 2006 The American Physical Society.
2006
Rossini, Davide; Benenti, Giuliano; Casati, Giulio
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/835667
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