Fonseca, PZG;
Aranas, EB;
Millen, J;
Monteiro, TS;
Barker, PF;
(2016)
Nonlinear Dynamics and Strong Cavity Cooling of Levitated Nanoparticles.
Physical Review Letters
, 117
, Article 173602. 10.1103/PhysRevLett.117.173602.
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Abstract
Optomechanical systems explore and exploit the coupling between light and the mechanical motion of macroscopic matter. A nonlinear coupling offers rich new physics, in both quantum and classical regimes. We investigate a dynamic, as opposed to the usually studied static, nonlinear optomechanical system, comprising a nanosphere levitated in a hybrid electro-optical trap. The cavity offers readout of both linear-in-position and quadratic-in-position (nonlinear) light-matter coupling, while simultaneously cooling the nanosphere, for indefinite periods of time and in high vacuum. We observe the cooling dynamics via both linear and nonlinear coupling. As the background gas pressure was lowered, we observed a greater than 1000-fold reduction in temperature before temperatures fell below readout sensitivity in the present setup. This Letter opens the way to strongly coupled quantum dynamics between a cavity and a nanoparticle largely decoupled from its environment.
| Type: | Article |
|---|---|
| Title: | Nonlinear Dynamics and Strong Cavity Cooling of Levitated Nanoparticles |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.117.173602 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.117.173602 |
| Language: | English |
| Additional information: | © 2016 American Physical Society, Nonlinear Dynamics and Strong Cavity Cooling of Levitated Nanoparticles, by P. Z. G. Fonseca, E. B. Aranas, J. Millen, T. S. Monteiro, and P. F. Barker, in: Phys. Rev. Lett. 117, 173602 – Published 21 October 2016. The final publication is available at APS via https://doi.org/10.1103/PhysRevLett.117.173602 |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, Quantum Ground-State, Nanomechanical Oscillator, Optomechanics, Nanosphere, Microwave, Vacuum, Light |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1529096 |
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