Entanglement-enhanced optomechanical sensing

被引：61

作者：

Xia, Yi ^{[1
,2
]}

Agrawal, Aman R. R. ^{[1
]}

Pluchar, Christian M. M. ^{[1
]}

Brady, Anthony J. J. ^{[3
]}

Liu, Zhen ^{[4
]}

Zhuang, Quntao ^{[1
,3
,5
]}

Wilson, Dalziel J. J. ^{[1
]}

Zhang, Zheshen ^{[1
,2
,3
,6
]}

机构：

[1] Univ Arizona, James C Wyant Coll Opt Sci, Tucson, AZ 85721 USA

[2] Univ Arizona, Dept Mat Sci & Engn, Tucson, AZ 85721 USA

[3] Univ Arizona, Dept Elect & Comp Engn, Tucson, AZ 85721 USA

[4] Univ Minnesota, Sch Phys & Astron, Minneapolis, MN USA

[5] Univ Southern Calif, Ming Hsieh Dept Elect & Comp Engn, Los Angeles, CA USA

[6] Univ Michigan, Dept Elect Engn & Comp Sci, Ann Arbor, MI 48104 USA

来源：

NATURE PHOTONICS | 2023年 / 17卷 / 06期

基金：

美国国家科学基金会;

关键词：

NANOMECHANICAL RESONATORS; FORCE; MOTION;

D O I：

10.1038/s41566-023-01178-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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 backaction noise arising from interactions between the two, dictate the standard quantum limit. Advanced techniques based on non-classical probes, in situ ponderomotive squeezed light and backaction-evading measurements have been developed to overcome the standard quantum limit for individual optomechanical sensors. An alternative, conceptually simpler approach to enhance optomechanical sensing rests on joint measurements taken by multiple sensors. In this configuration, a pathway to overcome 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 the shot-noise-dominant regime. Moreover, we quantify the overall performance of entangled probes with the sensitivity-bandwidth product and observe a 25% increase compared with that of classical probes. The demonstrated entanglement-enhanced optomechanical sensors would enable new capabilities for inertial navigation, acoustic imaging and searches for new physics. Joint force measurements with entangled optical probes on two optomechanical sensors are demonstrated. The force sensitivity is improved by 40% in the shot-noise-dominant regime. The sensing bandwidth is improved by 20% in the thermal noise limit.

引用

页码：470 / +

页数：9

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