Experimental realization of a thermal squeezed state of levitated optomechanics

Rashid, Muddassar and Tufarelli, Tommaso and Bateman, James and Vovrosh, Jamie and Hempston, David and Kim, M. S. and Ulbricht, Hendrik (2016) Experimental realization of a thermal squeezed state of levitated optomechanics. Physical Review Letters, 117 (27). 273601/1-273601/5. ISSN 1079-7114

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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.

Item Type: Article
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: 10.1103/PhysRevLett.117.273601
Depositing User: Tufarelli, Tommaso
Date Deposited: 07 Mar 2017 12:53
Last Modified: 07 Jul 2017 10:12
URI: http://eprints.nottingham.ac.uk/id/eprint/40803

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