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Title: Laser-induced rotation and cooling of a trapped microgyroscope in vacuum
Authors: Arita, Yoshihiko
Mazilu, Michael
Dholakia, Kishan
Keywords: Optical physics
QC Physics
Issue Date: 28-Aug-2013
Citation: Arita , Y , Mazilu , M & Dholakia , K 2013 , ' Laser-induced rotation and cooling of a trapped microgyroscope in vacuum ' Nature Communications , vol 4 , 2374 . , 10.1038/ncomms3374
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.
Version: Publisher PDF
Description: This work was supported by the UK Engineering and Physical Sciences Research Council (EPSRC grant numbers: EP/J01771X/1 and EP/G061688/1)
Status: Peer reviewed
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
Appears in Collections:Physics & Astronomy Research
University of St Andrews Research

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