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research article

Optomechanical sideband cooling of a micromechanical oscillator close to the quantum ground state

Riviere, R.  
•
Deleglise, S.  
•
Weis, S.  
Show more
2011
Physical Review A

Cooling a mesoscopic mechanical oscillator to its quantum ground state is elementary for the preparation and control of quantum states of mechanical objects. Here, we pre-cool a 70-MHz micromechanical silica oscillator to an occupancy below 200 quanta by thermalizing it with a 600-mK cold He-3 gas. Two-level-system induced damping via structural defect states is shown to be strongly reduced and simultaneously serves as a thermometry method to independently quantify excess heating due to the cooling laser. We demonstrate that dynamical back action optical sideband cooling can reduce the average occupancy to 9 +/- 1 quanta, implying that the mechanical oscillator can be found (10 +/- 1)% of the time in its quantum ground state.

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Type
research article
DOI
10.1103/PhysRevA.83.063835
Web of Science ID

WOS:000292038000011

Author(s)
Riviere, R.  
•
Deleglise, S.  
•
Weis, S.  
•
Gavartin, E.  
•
Arcizet, O.
•
Schliesser, A.  
•
Kippenberg, T. J.  
Date Issued

2011

Published in
Physical Review A
Volume

83

Issue

6

Article Number

063835

Subjects

Radiation-Pressure

•

Noise Reduction

•

Resonator

•

Cavity

•

Micromirror

•

Instability

•

Silica

•

Field

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LPQM  
Available on Infoscience
December 16, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/73913
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