Dynamical phase transition in the open Dicke model

Proceedings of the National Academy of Sciences of the United States of America
Jens KlinderA Hemmerich

Abstract

The Dicke model with a weak dissipation channel is realized by coupling a Bose-Einstein condensate to an optical cavity with ultranarrow bandwidth. We explore the dynamical critical properties of the Hepp-Lieb-Dicke phase transition by performing quenches across the phase boundary. We observe hysteresis in the transition between a homogeneous phase and a self-organized collective phase with an enclosed loop area showing power-law scaling with respect to the quench time, which suggests an interpretation within a general framework introduced by Kibble and Zurek. The observed hysteretic dynamics is well reproduced by numerically solving the mean-field equation derived from a generalized Dicke Hamiltonian. Our work promotes the understanding of nonequilibrium physics in open many-body systems with infinite range interactions.

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Citations

Mar 10, 2018·Proceedings of the National Academy of Sciences of the United States of America·Lorenz HrubyTilman Esslinger
Aug 10, 2019·Physical Chemistry Chemical Physics : PCCP·Adam D WexlerGiuseppe Vitiello
Sep 5, 2020·PloS One·Mor M Roses, Emanuele G Dalla Torre
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Sep 3, 2016·Physical Review Letters·Stefan SchützGiovanna Morigi
Dec 24, 2019·Physical Review Letters·William BerdanierEhud Altman
Sep 22, 2020·Physical Review Letters·P J D CrowleyA Chandran
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Jan 5, 2019·Physical Review Letters·Nicolò DefenuGiovanna Morigi
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Jun 26, 2021·Physical Review Letters·Federico Carollo, Igor Lesanovsky
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