Christopher Wipf et al 2008 New J. Phys. 10 095017 doi:10.1088/1367-2630/10/9/095017
Route to ponderomotive entanglement of light via optically trapped mirrors
Focus on Mechanical Systems at the Quantum LimitChristopher Wipf1,3, Thomas Corbitt1, Yanbei Chen2 and Nergis Mavalvala1
Show affiliationsPart of Focus on Mechanical Systems at the Quantum Limit
The radiation pressure of two laser beams detuned from resonance in an optical cavity can create a stable optical trap for a mechanical oscillation mode of a movable cavity mirror. Here it is shown that such a configuration entangles the output light fields via interaction with a mirror that is suspended as a pendulum. The degree of entanglement is quantified spectrally using the logarithmic negativity, and related to the available optical restoring force. Entanglement survives in the experimentally accessible regime of gram-scale masses subject to thermal noise at room temperature.
- PACS
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42.50.Dv Quantum state engineering and measurements
42.50.Lc Quantum fluctuations, quantum noise, and quantum jumps
37.10.Vz Mechanical effects of light on atoms, molecules, and ions
42.60.Mi Dynamical laser instabilities; noisy laser behavior
- Subjects
- Dates
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Issue 9 (September 2008)
Received 13 June 2008
Published 30 September 2008
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Route to ponderomotive entanglement of light via optically trapped mirrors
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