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APS » Journals » Phys. Rev. Lett. » Volume 96 » Issue 6
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Phys. Rev. Lett. 96, 060407 (2006) [4 pages]

Macroscopic Thermal Entanglement Due to Radiation Pressure

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Aires Ferreira1,2, Ariel Guerreiro1, and Vlatko Vedral2,3
1Faculdade Ciências Universidade do Porto, Rua do Campo Alegre 687 4169-007, Porto, Portugal
2Institut für Experimentalphysik, Universität Wien, Boltzmanngasse 5, A-1090 Vienna, Austria
3The School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, England, United Kingdom

Received 22 May 2005; published 17 February 2006

Can entanglement and the quantum behavior in physical systems survive at arbitrary high temperatures? In this Letter we show that this is the case for a electromagnetic field mode in an optical cavity with a movable mirror in a thermal state. We also identify two different dynamical regimes of generation of entanglement separated by a critical coupling strength.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.96.060407
DOI:
10.1103/PhysRevLett.96.060407
PACS:
03.65.Ta, 03.67.Mn, 42.50.−p
 
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