Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 12, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.123601
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Funding
- Research Council of Norway
- FRINAT Grant [191576/V30]
- NSF [DMR-1004406, 0653377]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0653377] Funding Source: National Science Foundation
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We propose an experiment to create and verify entanglement between remote mechanical objects by use of an optomechanical interferometer. Two optical cavities, each coupled to a separate mechanical oscillator, are coherently driven such that the oscillators are laser cooled to the quantum regime. The entanglement is induced by optical measurement and comes about by combining the output from the two cavities to erase which-path information. It can be verified through measurements of degrees of second-order coherence of the optical output field. The experiment is feasible in the regime of weak optomechanical coupling. Realistic parameters for the membrane-in-the-middle geometry suggest entangled state lifetimes on the order of milliseconds.
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