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

ABSTRACT: The efficient cooling of 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 coupled 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 undesired carrier transitions, and thereby cool the cantilever down to the vicinity of the vibrational ground state in a fast fashion.

SUBMITTER: Yan L

PROVIDER: S-EPMC4601024 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature

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

Yan Leilei L Zhang Jian-Qi JQ Zhang Shuo S Feng Mang M

Scientific reports 20151012

The efficient cooling of 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 coupled 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 t ...[more]

PMID: 26455901

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