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Experimental realization of a thermal squeezed state of levitated optomechanics

Rashid, Muddassar; Tufarelli, Tommaso; Bateman, James; Vovrosh, Jamie; Hempston, David; Kim, M. S.; Ulbricht, Hendrik

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Authors

Muddassar Rashid

James Bateman

Jamie Vovrosh

David Hempston

M. S. Kim

Hendrik Ulbricht



Abstract

We experimentally squeeze the thermal motional state of an optically levitated nanosphere by fast switching between two trapping frequencies. The measured phase-space distribution of the center of mass of our particle shows the typical shape of a squeezed thermal state, from which we infer up to 2.7 dB of squeezing along one motional direction. In these experiments the average thermal occupancy is high and, even after squeezing, the motional state remains in the remit of classical statistical mechanics. Nevertheless, we argue that the manipulation scheme described here could be used to achieve squeezing in the quantum regime if preceded by cooling of the levitated mechanical oscillator. Additionally, a higher degree of squeezing could, in principle, be achieved by repeating the frequency-switching protocol multiple times.

Citation

Rashid, M., Tufarelli, T., Bateman, J., Vovrosh, J., Hempston, D., Kim, M. S., & Ulbricht, H. (in press). Experimental realization of a thermal squeezed state of levitated optomechanics. Physical Review Letters, 117(27), Article 273601. https://doi.org/10.1103/PhysRevLett.117.273601

Journal Article Type Article
Acceptance Date Nov 16, 2016
Online Publication Date Dec 30, 2016
Deposit Date Mar 7, 2017
Publicly Available Date Mar 29, 2024
Journal Physical Review Letters
Print ISSN 0031-9007
Electronic ISSN 1079-7114
Publisher American Physical Society
Peer Reviewed Peer Reviewed
Volume 117
Issue 27
Article Number 273601
DOI https://doi.org/10.1103/PhysRevLett.117.273601
Public URL https://nottingham-repository.worktribe.com/output/831791
Publisher URL http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.273601

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