Experimental realization of a thermal squeezed state of levitated optomechanics

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Title: Experimental realization of a thermal squeezed state of levitated optomechanics
Authors: Rashid, M
Tufarelli, T
Bateman, J
Vovrosh, J
Hempston, D
Kim, MS
Ulbricht, H
Item Type: Journal Article
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.
Issue Date: 30-Dec-2016
Date of Acceptance: 1-Dec-2016
ISSN: 1079-7114
Publisher: American Physical Society
Journal / Book Title: Physical Review Letters
Volume: 117
Issue: 27
Copyright Statement: © 2016 American Physical Society
Sponsor/Funder: Engineering & Physical Science Research Council (E
The Leverhulme Trust
The Royal Society
Funder's Grant Number: EP/K034480/1
Keywords: Science & Technology
Physical Sciences
Physics, Multidisciplinary
General Physics
02 Physical Sciences
Publication Status: Published
Article Number: ARTN 273601
Appears in Collections:Quantum Optics and Laser Science
Faculty of Natural Sciences

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