Atom-based coherent quantum-noise cancellation in optomechanics

F. Bariani, H. Seok, S. Singh, M. Vengalattore, Pierre Meystre

Research output: Contribution to journalArticle

24 Scopus citations

Abstract

We analyze a quantum force sensor that uses coherent quantum-noise cancellation (CQNC) to beat the standard quantum limit. This sensor, which allows for the continuous, broadband detection of feeble forces, is a hybrid dual-cavity system composed of a mesoscopic mechanical resonator optically coupled to an ensemble of ultracold atoms. In contrast to the stringent constraints on dissipation typically associated with purely optical schemes of CQNC, the dissipation rate of the mechanical resonator only needs to be matched to the decoherence rate of the atomic ensemble - a condition that is experimentally achievable even for the technologically relevant regime of low-frequency mechanical resonators with large quality factors. The modular nature of the system further allows the atomic ensemble to aid in the cooling of the mechanical resonator, thereby combining atom-mediated state preparation with sensing deep in the quantum regime.

Original languageEnglish (US)
Article number043817
JournalPhysical Review A
Volume92
Issue number4
DOIs
StatePublished - Oct 14 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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