Cooling phonons with phonons: Acoustic reservoir engineering with silicon-vacancy centers in diamond

We study a setup where a single negatively-charged silicon-vacancy center in diamond is magnetically coupled to a low-frequency mechanical bending mode and via strain to the high-frequency phonon continuum of a semiclamped diamond beam. We show that under appropriate microwave driving conditions, th...

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Bibliographic Details
Published in:Physical review. B 2016-12, Vol.94 (22), p.214115
Main Authors: Kepesidis, K V, Lemonde, M-A, Norambuena, A, Maze, J R, Rabl, P
Format: Article
Language:English
Subjects:
Cooling
Cooling effects
Diamonds
Driving conditions
Laser cooling
Mechanical systems
Phonons
Reservoir engineering
Silicon
Strain
Vacancies
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Summary:We study a setup where a single negatively-charged silicon-vacancy center in diamond is magnetically coupled to a low-frequency mechanical bending mode and via strain to the high-frequency phonon continuum of a semiclamped diamond beam. We show that under appropriate microwave driving conditions, this setup can be used to induce a laser-cooling-like effect for the low-frequency mechanical vibrations, where the high-frequency longitudinal compression modes of the beam serve as an intrinsic low-temperature reservoir. We evaluate the experimental conditions under which cooling close to the quantum ground state can be achieved and describe an extended scheme for the preparation of a stationary entangled state between two mechanical modes. By relying on intrinsic properties of the mechanical beam only, this approach offers an interesting alternative for quantum manipulation schemes of mechanical systems, where otherwise efficient optomechanical interactions are not available.
ISSN:2469-9950
2469-9969