Force sensing based on coherent quantum noise cancellation in a hybrid optomechanical cavity with squeezed-vacuum injection

We propose and analyse a feasible experimental scheme for a quantum force sensor based on the elimination of backaction noise through coherent quantum noise cancellation (CQNC) in a hybrid atom-cavity optomechanical setup assisted with squeezed vacuum injection. The force detector, which allows for...

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Bibliographic Details
Published inNew journal of physics Vol. 18; no. 7; pp. 73040 - 73056
Main Authors Motazedifard, Ali, Bemani, F, Naderi, M H, Roknizadeh, R, Vitali, D
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 21.07.2016
Subjects
03.65.Ta
42.50.Dv
Atomic properties
Broadband
Cancellation
force sensing
Frequencies
hybrid cavity optomechanical system
Mechanical oscillators
Noise
Physics
Query languages
squeezed light
standard quantum limit
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Summary:We propose and analyse a feasible experimental scheme for a quantum force sensor based on the elimination of backaction noise through coherent quantum noise cancellation (CQNC) in a hybrid atom-cavity optomechanical setup assisted with squeezed vacuum injection. The force detector, which allows for a continuous, broadband detection of weak forces well below the standard quantum limit (SQL), is formed by a single optical cavity simultaneously coupled to a mechanical oscillator and to an ensemble of ultracold atoms. The latter acts as a negative-mass oscillator so that atomic noise exactly cancels the backaction noise from the mechanical oscillator due to destructive quantum interference. Squeezed vacuum injection enforces this cancellation and allows sub-SQL sensitivity to be reached in a very wide frequency band, and at much lower input laser powers.
Bibliography:NJP-104901.R1
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/18/7/073040