Enhanced weak force sensing through atom-based coherent noise
cancellation in a hybrid cavity optomechanical system
- URL: http://arxiv.org/abs/2201.10805v1
- Date: Wed, 26 Jan 2022 08:26:12 GMT
- Title: Enhanced weak force sensing through atom-based coherent noise
cancellation in a hybrid cavity optomechanical system
- Authors: S.K. Singh, M. Mazaheri, Jia-Xin Peng, and M. Asjad
- Abstract summary: We investigate weak force-sensing based on coherent quantum noise cancellation in a nonlinear hybrid optomechanical system.
The optomechanical cavity contains a moveable mechanical mirror, a fixed semitransparent mirror, an ensemble of ultracold atoms, and an optical parametric amplifier.
- Score: 0.0
- License: http://creativecommons.org/publicdomain/zero/1.0/
- Abstract: We investigate weak force-sensing based on coherent quantum noise
cancellation in a nonlinear hybrid optomechanical system. The optomechanical
cavity contains a moveable mechanical mirror, a fixed semitransparent mirror,
an ensemble of ultracold atoms, and an optical parametric amplifier (OPA).
Using the coherent quantum noise cancellation (CQNC) process, one can eliminate
the back action noise at all frequencies. Also by tuning the OPA parameters,
one can suppress the quantum shot-noise at lower frequencies than the resonant
frequency. In the CQNC scheme, the damping rate of the mechanical oscillator
matches the damping rate of the atomic ensemble, which is experimentally
achievable even for a low-frequency mechanical oscillator with a high-quality
factor. Elimination of the back action noise and suppression of the shot noise
significantly enhance force sensing and thus overcome the standard quantum
limit of weak force sensing. This hybrid scheme can play an essential role in
the realization of quantum optomechanical sensors and quantum control.
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