Coherent oscillations of a levitated birefringent microsphere in vacuum driven by nonconservative rotation-translation coupling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F20%3A00533784" target="_blank" >RIV/68081731:_____/20:00533784 - isvavai.cz</a>
Result on the web
<a href="https://advances.sciencemag.org/content/6/23/eaaz9858" target="_blank" >https://advances.sciencemag.org/content/6/23/eaaz9858</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/sciadv.aaz9858" target="_blank" >10.1126/sciadv.aaz9858</a>
Alternative languages
Result language
angličtina
Original language name
Coherent oscillations of a levitated birefringent microsphere in vacuum driven by nonconservative rotation-translation coupling
Original language description
We demonstrate an effect whereby stochastic, thermal fluctuations combine with nonconservative optical forces to break detailed balance and produce increasingly coherent, apparently deterministic motion for a vacuum-trapped particle. The particle is birefringent and held in a linearly polarized Gaussian optical trap. It undergoes oscillations that grow rapidly in amplitude as the air pressure is reduced, seemingly in contradiction to the equipartition of energy. This behavior is reproduced in direct simulations and captured in a simplified analytical model, showing that the underlying mechanism involves nonsymmetric coupling between rotational and translational degrees of freedom. When parametrically driven, these self-sustained oscillators exhibit an ultranarrow linewidth of 2.2 mu Hz and an ultrahigh mechanical quality factor in excess of 2 x 10(8) at room temperature. Last, nonequilibrium motion is seen to be a generic feature of optical vacuum traps, arising for any system with symmetry lower than that of a perfect isotropic microsphere in a Gaussian trap.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10306 - Optics (including laser optics and quantum optics)
Result continuities
Project
<a href="/en/project/GA19-17765S" target="_blank" >GA19-17765S: Multidimensional nonlinear optomechanics of levitated nanosystems</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science Advances
ISSN
2375-2548
e-ISSN
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Volume of the periodical
6
Issue of the periodical within the volume
23
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
eaaz9858
UT code for WoS article
000540787200026
EID of the result in the Scopus database
2-s2.0-85086624401