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Coherent oscillations of a levitated birefringent microsphere in vacuum driven by nonconservative rotation-translation coupling

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    SYSNO ASEP0533784
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevCoherent oscillations of a levitated birefringent microsphere in vacuum driven by nonconservative rotation-translation coupling
    Tvůrce(i) Arita, Y. (GB)
    Simpson, Stephen Hugh (UPT-D) RID, SAI
    Zemánek, Pavel (UPT-D) RID, SAI, ORCID
    Dholakia, K. (GB)
    Celkový počet autorů4
    Číslo článkueaaz9858
    Zdroj.dok.Science Advances - ISSN 2375-2548
    Roč. 6, č. 23 (2020)
    Poč.str.8 s.
    Forma vydáníTištěná - P
    Jazyk dok.eng - angličtina
    Země vyd.US - Spojené státy americké
    Klíč. slovaoptical binding ; force ; dynamics ; particle
    Vědní obor RIVBH - Optika, masery a lasery
    Obor OECDOptics (including laser optics and quantum optics)
    CEPGA19-17765S GA ČR - Grantová agentura ČR
    Způsob publikováníOpen access
    Institucionální podporaUPT-D - RVO:68081731
    UT WOS000540787200026
    EID SCOPUS85086624401
    DOI10.1126/sciadv.aaz9858
    AnotaceWe 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.
    PracovištěÚstav přístrojové techniky
    KontaktMartina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178
    Rok sběru2021
    Elektronická adresahttps://advances.sciencemag.org/content/6/23/eaaz9858
Počet záznamů: 1