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Open Quantum Systems Decoherence Quantum Simulation

Dynamical symmetries and crossovers in a three-spin system with collective dissipation

arXiv
Authors: Simon Pigeon, André Xuereb, Igor Lesanovsky, Juan P. Garrahan, Gabriele De Chiara, Mauro Paternostro

Year

2014

Paper ID

47786

Status

Preprint

Abstract Read

~2 min

Abstract Words

98

Citations

N/A

Abstract

We consider the non-equilibrium dynamics of a simple system consisting of interacting spin-1/2 particles subjected to a collective damping. The model is close to situations that can be engineered in hybrid electro/opto-mechanical settings. Making use of large-deviation theory, we find a Gallavotti-Cohen symmetry in the dynamics of the system as well as evidence for the coexistence of two dynamical phases with different activity levels. We show that additional damping processes smoothen out this behavior. Our analytical results are backed up by Monte Carlo simulations that reveal the nature of the trajectories contributing to the different dynamical phases.

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  • We consider the non-equilibrium dynamics of a simple system consisting of interacting spin-1/2 particles subjected to a collective damping.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1409.0422 [2] arXiv https://arxiv.org/abs/1409.0422 [3] Publisher https://arxiv.org/abs/1409.0422

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