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Entropy 2016, 18(9), 319; doi:10.3390/e18090319

Quantum Hysteresis in Coupled Light–Matter Systems

1
Departamento de Física, Universidad de Los Andes, A.A. 4976, Bogotá 111711, Colombia
2
Joint Institute for Lab Astrophysics, University of Colorado, Boulder, CO 80309, USA
3
Department of Physics, University of Miami, Coral Gables, FL 33124, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Martin Eckstein
Received: 28 June 2016 / Revised: 18 August 2016 / Accepted: 29 August 2016 / Published: 7 September 2016
(This article belongs to the Special Issue Quantum Nonequilibrium Dynamics)
View Full-Text   |   Download PDF [6766 KB, uploaded 7 September 2016]   |  

Abstract

We investigate the non-equilibrium quantum dynamics of a canonical light–matter system—namely, the Dicke model—when the light–matter interaction is ramped up and down through a cycle across the quantum phase transition. Our calculations reveal a rich set of dynamical behaviors determined by the cycle times, ranging from the slow, near adiabatic regime through to the fast, sudden quench regime. As the cycle time decreases, we uncover a crossover from an oscillatory exchange of quantum information between light and matter that approaches a reversible adiabatic process, to a dispersive regime that generates large values of light–matter entanglement. The phenomena uncovered in this work have implications in quantum control, quantum interferometry, as well as in quantum information theory. View Full-Text
Keywords: irreversibility; light–matter entanglement irreversibility; light–matter entanglement
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Gómez-Ruiz, F.J.; Acevedo, O.L.; Quiroga, L.; Rodríguez, F.J.; Johnson, N.F. Quantum Hysteresis in Coupled Light–Matter Systems. Entropy 2016, 18, 319.

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