Phase noise and laser-cooling limits of optomechanical oscillators

Abstract

The noise from laser phase fluctuation sets a major technical obstacle to cool the nano-mechanical oscillators to the quantum region. We propose a cooling configuration based on the opto-mechanical coupling with two cavity modes to significantly reduce this phase noise by $(2{\omega }_m/\gamma {)}^2$ times, where ${\omega }_m$ is the frequency of the mechanical mode and $\gamma$ is the decay rate of the cavity mode. We also discuss the detection of the phonon number when the mechanical oscillator is cooled near the quantum region and specify the required conditions for this detection.

5 pages, 2 figures, comments are welcome; reference is updated. A note is added on a similar paper recently published; revised and accepted for PRA

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• Unconventional photon blockade in three-mode optomechanics
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• Quantum network of superconducting qubits through opto-mechanical interface
• Three dimensional cooling and detecting of a nanosphere with a single cavity
• Achieving ground state and enhancing entanglement by recovering information
• Cooling mechanical resonators to quantum ground state from room temperature
• Laser phase noise effects on the dynamics of optomechanical resonators
• Cooling a Mechanical Resonator to Quantum Regime by heating it
• Dispersive interaction of a Bose-Einstein condensate with the movable mirror of an optomechanical cavity in the presence of the laser phase noise
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• Suppressing laser phase noise in an optomechanical system
• Manipulation of nanomechanical resonator via shaking optical frequency
• Effect of laser phase noise on the fidelity of optomechanical quantum memory