Laser and cavity cooling of a mechanical resonator with a nitrogen-vacancy center in diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2016-11-17 |
| Journal | Physical review. A/Physical review, A |
| Authors | Luigi Giannelli, Ralf Betzholz, Laura Kreiner, Marc Bienert, Giovanna Morigi |
| Institutions | Saarland University |
| Citations | 5 |
Abstract
Section titled āAbstractāWe theoretically analyse the cooling dynamics of a high-Q mode of a\nmechanical resonator, when the structure is also an optical cavity and is\ncoupled with a NV center. The NV center is driven by a laser and interacts with\nthe cavity photon field and with the strain field of the mechanical oscillator,\nwhile radiation pressure couples mechanical resonator and cavity field.\nStarting from the full master equation we derive the rate equation for the\nmechanical resonatorās motion, whose coefficients depend on the system\nparameters and on the noise sources. We then determine the cooling regime, the\ncooling rate, the asymptotic temperatures, and the spectrum of resonance\nfluorescence for experimentally relevant parameter regimes. For these\nparameters, we consider an electronic transition, whose linewidth allows one to\nperform sideband cooling, and show that the addition of an optical cavity in\ngeneral does not improve the cooling efficiency. We further show that pure\ndephasing of the NV centerās electronic transitions can lead to an improvement\nof the cooling efficiency.\n