物理
量子极限
量子传感器
光力学
量子纠缠
噪音(视频)
带宽(计算)
量子
散粒噪声
灵敏度(控制系统)
量子计量学
量子力学
光学
电子工程
量子网络
计算机科学
探测器
图像(数学)
工程类
人工智能
计算机网络
作者
Yi Xia,Aman R. Agrawal,Christian M. Pluchar,Anthony J. Brady,Zhen Liu,Quntao Zhuang,Dalziel J. Wilson,Zheshen Zhang
出处
期刊:Nature Photonics
[Springer Nature]
日期:2023-04-20
卷期号:17 (6): 470-477
被引量:19
标识
DOI:10.1038/s41566-023-01178-0
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 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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