Entanglement-Enhanced Optomechanical Sensing

Journal Article · Fri Oct 28 00:00:00 EDT 2022 · TBD

OSTI ID:1915415

Xia, Yi ^[1]; Agrawal, Aman R. ^[2]; Pluchar, Christian M. ^[2]; Brady, Anthony J.  ^[3]; Liu, Zhen  ^[4]; Zhuang, Quntao ^[5]; Wilson, Dalziel J.  ^[2]; Zhang, Zheshen ^[6]

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1. Arizona U., Optical Sci. Ctr.; Arizona U.
2. Arizona U., Optical Sci. Ctr.
3. Arizona U.
4. Minnesota U.
5. Arizona U.; Arizona U., Optical Sci. Ctr.; Southern California U.
6. Arizona U.; Arizona U., Optical Sci. Ctr.; U. Michigan, Ann Arbor

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.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1915415
• Report Number(s): FERMILAB-PUB-22-848-SQMS-V; arXiv:2210.16180; oai:inspirehep.net:2173137
• Journal Information: TBD, Journal Name: TBD
• Country of Publication: United States
• Language: English