Počet záznamů: 1
Coherent oscillations of a levitated birefringent microsphere in vacuum driven by nonconservative rotation-translation coupling
- 1.
SYSNO ASEP 0533784 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Coherent 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 autorů 4 Číslo článku eaaz9858 Zdroj.dok. Science Advances - ISSN 2375-2548
Roč. 6, č. 23 (2020)Poč.str. 8 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova optical binding ; force ; dynamics ; particle Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP GA19-17765S GA ČR - Grantová agentura ČR Způsob publikování Open access Institucionální podpora UPT-D - RVO:68081731 UT WOS 000540787200026 EID SCOPUS 85086624401 DOI 10.1126/sciadv.aaz9858 Anotace 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. Pracoviště Ústav přístrojové techniky Kontakt Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Rok sběru 2021 Elektronická adresa https://advances.sciencemag.org/content/6/23/eaaz9858
Počet záznamů: 1