Bringing entanglement to the high temperature limit

Decoherence due to contact with a hot environment typically restricts quantum phenomena to the low temperature limit, k_{B}T/ℏω≪1 (ℏω is the typical energy of the system). Here we report the existence of a nonequilibrium state for two coupled, parametrically driven, dissipative harmonic oscillators...

Full description

Saved in:
Bibliographic Details
Published inPhysical review letters Vol. 105; no. 18; p. 180501
Main Authors Galve, Fernando, Pachón, Leonardo A, Zueco, David
Format Journal Article
LanguageEnglish
Published United States 29.10.2010
Online AccessGet more information

Cover

More Information
Summary:Decoherence due to contact with a hot environment typically restricts quantum phenomena to the low temperature limit, k_{B}T/ℏω≪1 (ℏω is the typical energy of the system). Here we report the existence of a nonequilibrium state for two coupled, parametrically driven, dissipative harmonic oscillators which, contrary to generalized intuition, has stationary entanglement at high temperatures. This clarifies the role of temperature and could lighten the burden on quantum experiments requiring delicate precooling setups.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.105.180501