Entanglement-enhanced optomechanical sensor array with application to dark matter searches
Entanglement-enhanced optomechanical sensor array with application to dark matter searches
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DOI：
10.1038/s42005-023-01357-z
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发表时间：
2023-09
影响因子：
5.5
通讯作者：
Anthony J. Brady;Xin Chen;Yi Xia;J. Manley;Mitul Dey Chowdhury;Kewen Xiao;Zhenghao Liu;R. Harnik;Dalziel J. Wilson;Zheshen Zhang;Quntao Zhuang
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作者：
Anthony J. Brady;Xin Chen;Yi Xia;J. Manley;Mitul Dey Chowdhury;Kewen Xiao;Zhenghao Liu;R. Harnik;Dalziel J. Wilson;Zheshen Zhang;Quntao Zhuang
长期以来，压缩光被用于提高单个光机械传感器的精度。一组新兴的建议试图使用光机械传感器阵列来检测弱分布力，应用范围从基于重力的地下成像到暗物质搜索;然而，对这种方法的量子增强的详细调查仍然悬而未决。在这里，我们提出了一个阵列的纠缠增强的光机械传感器，以提高分布式力传感的宽带灵敏度。通过相干地操作光机械传感器阵列并分布挤压以使光场纠缠，传感器阵列相对于独立传感器具有缩放优势（即，其中M是传感器的数量）以及由于多体纠缠的联合噪声抑制。作为一个例子，我们认为纠缠增强的光机械加速度计阵列寻找暗物质，并阐明在这种情况下实现量子优势的挑战。
Squeezed light has long been used to enhance the precision of a single optomechanical sensor. An emerging set of proposals seeks to use arrays of optomechanical sensors to detect weak distributed forces, for applications ranging from gravity-based subterranean imaging to dark matter searches; however, a detailed investigation into the quantum-enhancement of this approach remains outstanding. Here, we propose an array of entanglement-enhanced optomechanical sensors to improve the broadband sensitivity of distributed force sensing. By coherently operating the optomechanical sensor array and distributing squeezing to entangle the optical fields, the array of sensors has a scaling advantage over independent sensors (i.e.,, whereMis the number of sensors) due to coherence as well as joint noise suppression due to multi-partite entanglement. As an illustration, we consider entanglement-enhancement of an optomechanical accelerometer array to search for dark matter, and elucidate the challenge of realizing a quantum advantage in this context.