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Phys. Rev. Lett. 98, 030405 (2007) [4 pages]

Optomechanical Entanglement between a Movable Mirror and a Cavity Field

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D. Vitali1, S. Gigan2, A. Ferreira2,3, H. R. Böhm2, P. Tombesi1, A. Guerreiro3, V. Vedral2,4, A. Zeilinger2,5, and M. Aspelmeyer2,5
1Dipartimento di Fisica, Università di Camerino, I-62032 Camerino (MC), Italy
2Institut für Experimentalphysik, Universität Wien, Boltzmanngasse 5, 1090 Wien, Austria
3Faculdade Ciências Universidade do Porto, Rua do Campo Alegre 687 4169-007, Porto, Portugal
4The School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, United Kingdom
5Institute for Quantum Optics and Quantum Information (IQOQI), Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Wien, Austria

Received 27 April 2006; published 19 January 2007

We show how stationary entanglement between an optical cavity field mode and a macroscopic vibrating mirror can be generated by means of radiation pressure. We also show how the generated optomechanical entanglement can be quantified, and we suggest an experimental readout scheme to fully characterize the entangled state. Surprisingly, such optomechanical entanglement is shown to persist for environment temperatures above 20 K using state-of-the-art experimental parameters.

© 2007 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.98.030405
DOI:
10.1103/PhysRevLett.98.030405
PACS:
03.65.Ud, 03.65.Ta, 05.40.Jc, 42.50.Xa
 
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