Timberlake, C;
Toros, M;
Hempston, D;
Winstone, G;
Rashid, M;
Ulbricht, H;
(2019)
Static force characterization with Fano anti-resonance in levitated optomechanics.
Applied Physics Letters
, 114
(2)
, Article 023104. 10.1063/1.5081045.
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Abstract
We demonstrate a classical analogy to the Fano anti-resonance in levitated optomechanics by applying a DC electric field. Specifically, we experimentally tune the Fano parameter by applying a DC voltage from 0 kV to 10 kV on a nearby charged needle tip. We find consistent results across negative and positive needle voltages, with the Fano line-shape feature able to exist at both higher and lower frequencies than the fundamental oscillator frequency. We can use the Fano parameter to characterize our system to be sensitive to static interactions which are ever-present. Currently, we can distinguish a static Coulomb force of 2.7 6 0.5 1015 N with the Fano parameter, which is measured with 1 s of integration time. Furthermore, we are able to extract the charge to mass ratio of the trapped nanoparticle.
| Type: | Article |
|---|---|
| Title: | Static force characterization with Fano anti-resonance in levitated optomechanics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.5081045 |
| Publisher version: | https://doi.org/10.1063/1.5081045 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Applied, Physics, ELECTROMAGNETICALLY INDUCED TRANSPARENCY, RESONANCES, INTERFERENCE, SCATTERING |
| 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 |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10069151 |
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