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Laser-induced rotation and cooling of a trapped microgyroscope in vacuum

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Arita_ncomms3374Laser_inducedrotation.pdf (1.027Mb)
Date
28/08/2013
Author
Arita, Yoshihiko
Mazilu, Michael
Dholakia, Kishan
Keywords
Optical physics
QC Physics
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Abstract
Quantum state preparation of mesoscopic objects is a powerful playground for the elucidation of many physical principles. The field of cavity optomechanics aims to create these states through laser cooling and by minimizing state decoherence. Here we demonstrate simultaneous optical trapping and rotation of a birefringent microparticle in vacuum using a circularly polarized trapping laser beam—a microgyroscope. We show stable rotation rates up to 5 MHz. Coupling between the rotational and translational degrees of freedom of the trapped microgyroscope leads to the observation of positional stabilization in effect cooling the particle to 40 K. We attribute this cooling to the interaction between the gyroscopic directional stabilization and the optical trapping field.
Citation
Arita , Y , Mazilu , M & Dholakia , K 2013 , ' Laser-induced rotation and cooling of a trapped microgyroscope in vacuum ' , Nature Communications , vol. 4 , 2374 . https://doi.org/10.1038/ncomms3374
Publication
Nature Communications
Status
Peer reviewed
DOI
https://doi.org/10.1038/ncomms3374
ISSN
2041-1723
Type
Journal article
Rights
This work is licensed under a Creative Commons Attribution 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by/3.0/
Description
This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC grant numbers: EP/J01771X/1 and EP/G061688/1)
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/4019

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