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Optomechanical entanglement between a movable mirror and a cavity field
D Vitali1, S Gigan, A Ferreira
1Dipartimento di Fisica, Università di Camerino, I-62032 Camerino (MC), Italy.
Physical Review Letters
|March 16, 2007
Summary
Researchers demonstrate stationary entanglement between optical cavity fields and vibrating mirrors using radiation pressure. This optomechanical entanglement is quantifiable and persists above 20 K, even with current experimental setups.
Area of Science:
- Quantum physics
- Optomechanics
Background:
- Entanglement is a key quantum phenomenon.
- Optomechanical systems couple light and mechanical motion.
Purpose of the Study:
- To demonstrate stationary entanglement between an optical cavity field and a macroscopic mechanical resonator.
- To quantify the generated optomechanical entanglement.
- To propose an experimental scheme for state characterization.
Main Methods:
- Utilizing radiation pressure to couple cavity photons and mirror motion.
- Developing methods for quantifying entanglement in an optomechanical setting.
- Proposing a specific experimental readout protocol.
Main Results:
- Stationary entanglement between optical cavity mode and vibrating mirror achieved.
- A method for quantifying optomechanical entanglement is presented.
- Entanglement demonstrated to persist above 20 K with current experimental parameters.
Conclusions:
- Stationary optomechanical entanglement is achievable.
- The proposed quantification and readout methods are effective.
- Optomechanical entanglement shows remarkable thermal robustness.
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