Entanglement-enhanced optomechanical sensor array with application to dark matter searches

Anthony J. Brady, Xin Chen, Yi Xia, Jack Manley, Mitul Dey Chowdhury, Kewen Xiao, Zhen Liu, Roni Harnik, Dalziel J. Wilson, Zheshen Zhang, Quntao Zhuang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

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., M→M , where M is 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.

Original languageEnglish (US)
Article number237
JournalCommunications Physics
Volume6
Issue number1
DOIs
StatePublished - Dec 2023

ASJC Scopus subject areas

  • General Physics and Astronomy

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