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Experimental Realization of a Thermal Squeezed State of Levitated Optomechanics
Muddassar Rashid,
Tommaso Tufarelli,
James Bateman 
,
Jamie Vovrosh,
David Hempston,
M. S. Kim,
Hendrik Ulbricht
,
Jamie Vovrosh,
David Hempston,
M. S. Kim,
Hendrik Ulbricht
Physical Review Letters, Volume: 117, Issue: 27
Swansea University Author:
James Bateman
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DOI (Published version): 10.1103/physrevlett.117.273601
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...
| Published in: | Physical Review Letters |
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| ISSN: | 0031-9007 1079-7114 |
| Published: |
American Physical Society (APS)
2016
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa31701 |
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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. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
27 |