Entanglement-Enhanced Optomechanical Sensing
- URL: http://arxiv.org/abs/2210.16180v1
- Date: Fri, 28 Oct 2022 14:51:16 GMT
- Title: Entanglement-Enhanced Optomechanical Sensing
- Authors: Yi Xia, Aman R. Agrawal, Christian M. Pluchar, Anthony J. Brady, Zhen
Liu, Quntao Zhuang, Dalziel J. Wilson, Zheshen Zhang
- Abstract summary: Optomechanical systems have been exploited in ultrasensitive measurements of force, acceleration, and magnetic fields.
We show that joint force measurements taken with entangled probes on multiple optomechanical sensors can improve the bandwidth in the thermal-noise-dominant regime.
The demonstrated entanglement-enhanced optomechanical sensing could enable new capabilities for inertial navigation, acoustic imaging, and searches for new physics.
- Score: 2.152481479747191
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Optomechanical systems have been exploited in ultrasensitive measurements of
force, acceleration, and magnetic fields. The fundamental limits for
optomechanical sensing have been extensively studied and now well understood --
the intrinsic uncertainties of the bosonic optical and mechanical modes,
together with the backaction noise arising from the interactions between the
two, dictate the Standard Quantum Limit (SQL). Advanced techniques based on
nonclassical probes, in-situ pondermotive squeezed light, and
backaction-evading measurements have been developed to overcome the SQL for
individual optomechanical sensors. An alternative, conceptually simpler
approach to enhance optomechanical sensing rests upon joint measurements taken
by multiple sensors. In this configuration, a pathway toward overcoming the
fundamental limits in joint measurements has not been explored. Here, we
demonstrate that joint force measurements taken with entangled probes on
multiple optomechanical sensors can improve the bandwidth in the
thermal-noise-dominant regime or the sensitivity in shot-noise-dominant regime.
Moreover, we quantify the overall performance of entangled probes with the
sensitivity-bandwidth product and observe a 25% increase compared to that of
the classical probes. The demonstrated entanglement-enhanced optomechanical
sensing could enable new capabilities for inertial navigation, acoustic
imaging, and searches for new physics.
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