Abstract
The noise from laser phase fluctuation sets a major technical obstacle to cool the nanomechanical oscillators to the quantum region. We propose a cooling configuration based on the optomechanical coupling with two cavity modes to significantly reduce this phase noise by times, where is the frequency of the mechanical mode and 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.
- Received 15 June 2009
DOI:https://doi.org/10.1103/PhysRevA.80.033821
©2009 American Physical Society