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arXiv · 1406.1611

Fast optical cooling of a nanomechanical cantilever by a dynamical Stark-shift gate

Leilei Yan·Jian-Qi Zhang·Shuo Zhang·Mang Feng
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Abstract

The efficient cooling of the nanomechanical resonators is essential to exploration of quantum properties of the macroscopic or mesoscopic systems. We propose such a laser-cooling scheme for a nanomechanical cantilever, which works even for the low-frequency mechanical mode and under weak cooling lasers. The cantilever is attached by a diamond nitrogen-vacancy center under a strong magnetic field gradient and the cooling is assisted by a dynamical Stark-shift gate. Our scheme can effectively enhance the desired cooling efficiency by avoiding the off-resonant and unexpected carrier transitions, and thereby cool the cantilever down to the vicinity of the vibrational ground state in a fast fashion.

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Leilei Yan, Jian-Qi Zhang, Shuo Zhang, Mang Feng. 2014-06-06. Fast optical cooling of a nanomechanical cantilever by a dynamical Stark-shift gate. https://doi.org/10.1038/srep14977

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