%0 Journal Article
%T Creation and protection of entanglement in systems out of thermal equilibrium
%+ Physique de l'Exciton, du Photon et du Spin (PEPS)
%A Bellomo, Bruno
%A Antezza, Mauro
%< avec comité de lecture
%Z L2C:13-254
%@ 1367-2630
%J New Journal of Physics
%I Institute of Physics: Open Access Journals
%V 15
%P 113052
%8 2013-11-26
%D 2013
%R 10.1088/1367-2630/15/11/113052
%Z Physics [physics]/Condensed Matter [cond-mat]/Quantum Gases [cond-mat.quant-gas]
%Z Physics [physics]/Condensed Matter [cond-mat]/Statistical Mechanics [cond-mat.stat-mech]Journal articles
%X We investigate the creation of entanglement between two quantum emitters interacting with a realistic common stationary electromagnetic field out of thermal equilibrium. In the case of two qubits we show that the absence of equilibrium allows the generation of steady entangled states, which is inaccessible at thermal equilibrium and is realized without any further external action on the two qubits. We first give a simple physical interpretation of the phenomenon in a specific case and then we report a detailed investigation on the dependence of the entanglement dynamics on the various physical parameters involved. Sub- and super-radiant effects are discussed, and qualitative differences in the dynamics concerning both creation and protection of entanglement according to the initial two-qubit state are pointed out.
%G English
%2 https://hal.science/hal-00909815/document
%2 https://hal.science/hal-00909815/file/NJP_15_11_113052.pdf
%L hal-00909815
%U https://hal.science/hal-00909815
%~ CNRS
%~ L2C
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021