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Phys. Rev. Lett. 97, 100401 (2006) [4 pages]

Transfer of Nonclassical Properties from a Microscopic Superposition to Macroscopic Thermal States in the High Temperature Limit

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Hyunseok Jeong* and Timothy C. Ralph
Department of Physics, University of Queensland, St Lucia, Qld 4072, Australia

Received 29 June 2005; published 5 September 2006

We present several examples where prominent quantum properties are transferred from a microscopic superposition to thermal states at high temperatures. Our work is motivated by an analogy of Schrödinger’s cat paradox, where the state corresponding to the virtual cat is a mixed thermal state with a large average photon number. Remarkably, quantum entanglement can be produced between thermal states with nearly the maximum Bell-inequality violation even when the temperatures of both modes approach infinity.

© 2006 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.97.100401
DOI:
10.1103/PhysRevLett.97.100401
PACS:
03.65.Ta, 03.65.Ud, 03.67.−a, 42.50.−p

*Electronic address: jeong@physics.uq.edu.au