期刊
PHYSICAL REVIEW LETTERS
卷 105, 期 18, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.180501
关键词
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资金
- MICINN [FIS2008-01240, FIS2009-13364-C02-01]
- COQUSYS (IFISC-CSIC) [200450E566]
- Colciencias
- Universidad Nacional de Colombia
Decoherence due to contact with a hot environment typically restricts quantum phenomena to the low temperature limit, k(B)T/(h) over bar omega << 1 ((h) over bar omega 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.
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