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Quantum-Enhanced Optomechanical Sensor Network
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DOI：10.1002/lpor.202501636.png)
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Abstract
En 中文
Distributed quantum sensing (DQS), an essential branch of quantum metrology, can substantially boost the sensitivity and reliability in multi-parameter estimation, achieving the Heisenberg scaling. Here, we report the first experimental demonstration of a quantum-enhanced optomechanical sensor network, achieving the DQS advantage of a maximum -fold increase trend with sensor number. The challenge of poor uniformity is addressed by decoupling and independently manipulating each optomechanical parameter, and the acquired inconsistencies are less than 2.4%. By tailoring a four-partite entangled state, the acquired quantum advantage is 57.3% compared to that with coherent probes, and 23.7% compared to that with the separable scheme. Moreover, the quantum enhanced optomechanical sensor network is applied to estimate incoherent forces, enhancing the estimation resolution by 33.7% in contrast with the separable scheme. The entanglement-enhanced optomechanical sensors with high consistency pave the way for future large-scale quantum sensor network, facilitating the micro-seismic epicenter locating, dark matter searching, and so on.
Keywords:
distributed quantum sensing
optomechanical sensor network
quantum metrology