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

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.
Type de document :
Pré-publication, Document de travail
t16/183 6 pages, 2 figures. 2017
Domaine :

Littérature citée [48 références]

https://hal-cea.archives-ouvertes.fr/cea-01466611
Contributeur : Emmanuelle De Laborderie <>
Soumis le : lundi 13 février 2017 - 16:10:27
Dernière modification le : jeudi 15 mars 2018 - 15:05:54
Document(s) archivé(s) le : dimanche 14 mai 2017 - 14:43:19

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1611.09378.pdf
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### Identifiants

• HAL Id : cea-01466611, version 1
• ARXIV : 1611.09378

### Citation

Orazio Scarlatella, Marco Schiró. Dissipation-Induced Superradiance in a Non-Markovian Open Dicke Model. t16/183 6 pages, 2 figures. 2017. 〈cea-01466611〉

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