Experimental Realization of a Thermal Squeezed State of Levitated Optomechanics

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...

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Veröffentlicht in:Physical review letters 2016-12, Vol.117 (27), p.273601-273601, Article 273601
Hauptverfasser: Rashid, Muddassar, Tufarelli, Tommaso, Bateman, James, Vovrosh, Jamie, Hempston, David, Kim, M S, Ulbricht, Hendrik
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container_issue 27
container_start_page 273601
container_title Physical review letters
container_volume 117
creator Rashid, Muddassar
Tufarelli, Tommaso
Bateman, James
Vovrosh, Jamie
Hempston, David
Kim, M S
Ulbricht, Hendrik
description 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.
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source APS: American Physical Society E-Journals (Physics)
subjects Center of mass
Compressing
Motional
Nanostructure
Opto-mechanics
Statistical mechanics
Switching
Trapping
title Experimental Realization of a Thermal Squeezed State of Levitated Optomechanics
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