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Open Quantum Systems Decoherence

Dissipation-Induced Superradiance in a Non-Markovian Open Dicke Model

arXiv
Authors: Orazio Scarlatella, Marco Schiró

Year

2016

Paper ID

42164

Status

Preprint

Abstract Read

~2 min

Abstract Words

106

Citations

N/A

Abstract

We consider the Dicke model, describing an ensemble of N quantum spins interacting with a cavity field, and study how the coupling to a non-Markovian environment with power-law spectrum changes the physics of superradiant phase transition. Quite remarkably we find that dissipation can induce, rather than suppress, the ordered phase, a result which is in striking contrast with both thermal and Markovian quantum baths. We interpret this dissipation-induced superradiance as a genuine dissipative quantum phase transition that exists even at finite N due to the coupling with the bath modes and whose nature and critical properties strongly depend on the spectral features of the non-Markovian environment.

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  • We consider the Dicke model, describing an ensemble of N quantum spins interacting with a cavity field, and study how the coupling to a non-Markovian environment with power-law...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1611.09378 [2] arXiv https://arxiv.org/abs/1611.09378 [3] Publisher https://arxiv.org/abs/1611.09378

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