Dispersive Regimes of the Dicke Model

Abstract We study two dispersive regimes of the Dicke model in the dynamics of N two-level atoms interacting with a bosonic mode for long interaction times. Firstly, we analyze the model for the regime in which the qubit frequencies are equal and smaller than the mode frequency, and for values of th...

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Autores principales:	Diego Barberena, Lucas Lamata, Enrique Solano
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d6aa9a5010f74b12bf5bfcd1eea8ea9e
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spelling	oai:doaj.org-article:d6aa9a5010f74b12bf5bfcd1eea8ea9e2021-12-02T12:31:47ZDispersive Regimes of the Dicke Model10.1038/s41598-017-09110-72045-2322https://doaj.org/article/d6aa9a5010f74b12bf5bfcd1eea8ea9e2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09110-7https://doaj.org/toc/2045-2322Abstract We study two dispersive regimes of the Dicke model in the dynamics of N two-level atoms interacting with a bosonic mode for long interaction times. Firstly, we analyze the model for the regime in which the qubit frequencies are equal and smaller than the mode frequency, and for values of the coupling strength similar or larger than the mode frequency, namely, the deep strong coupling regime. Secondly, we address an interaction that is dependent on the photon number, where the coupling strength is comparable to the geometric mean of the qubit and mode frequencies. We show that the associated dynamics is analytically tractable and provide useful frameworks with which to analyze the system behavior. In the deep strong coupling regime, we unveil the structure of unexpected resonances for specific values of the coupling, present for N ≥ 2, and in the photon-number-dependent regime we demonstrate that all the nontrivial dynamical behavior occurs in the atomic degrees of freedom for a given Fock state. We verify these assertions with numerical simulations of the qubit population and photon-statistic dynamics.Diego BarberenaLucas LamataEnrique SolanoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Diego Barberena Lucas Lamata Enrique Solano Dispersive Regimes of the Dicke Model
description	Abstract We study two dispersive regimes of the Dicke model in the dynamics of N two-level atoms interacting with a bosonic mode for long interaction times. Firstly, we analyze the model for the regime in which the qubit frequencies are equal and smaller than the mode frequency, and for values of the coupling strength similar or larger than the mode frequency, namely, the deep strong coupling regime. Secondly, we address an interaction that is dependent on the photon number, where the coupling strength is comparable to the geometric mean of the qubit and mode frequencies. We show that the associated dynamics is analytically tractable and provide useful frameworks with which to analyze the system behavior. In the deep strong coupling regime, we unveil the structure of unexpected resonances for specific values of the coupling, present for N ≥ 2, and in the photon-number-dependent regime we demonstrate that all the nontrivial dynamical behavior occurs in the atomic degrees of freedom for a given Fock state. We verify these assertions with numerical simulations of the qubit population and photon-statistic dynamics.
format	article
author	Diego Barberena Lucas Lamata Enrique Solano
author_facet	Diego Barberena Lucas Lamata Enrique Solano
author_sort	Diego Barberena
title	Dispersive Regimes of the Dicke Model
title_short	Dispersive Regimes of the Dicke Model
title_full	Dispersive Regimes of the Dicke Model
title_fullStr	Dispersive Regimes of the Dicke Model
title_full_unstemmed	Dispersive Regimes of the Dicke Model
title_sort	dispersive regimes of the dicke model
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/d6aa9a5010f74b12bf5bfcd1eea8ea9e
work_keys_str_mv	AT diegobarberena dispersiveregimesofthedickemodel AT lucaslamata dispersiveregimesofthedickemodel AT enriquesolano dispersiveregimesofthedickemodel
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Dispersive Regimes of the Dicke Model

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