Rashid, M;
Toroš, M;
Ulbricht, H;
(2017)
Wigner Function Reconstruction in Levitated Optomechanics.
Quantum Measurements and Quantum Metrology
, 4
(1)
pp. 17-25.
10.1515/qmetro-2017-0003.
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Abstract
We demonstrate the reconstruction of the Wigner function from marginal distributions of the motion of a single trapped particle using homodyne detection. We show that it is possible to generate quantum states of levitated optomechanical systems even under the effect of continuous measurement by the trapping laser light. We describe the opto-mechanical coupling for the case of the particle trapped by a free-space focused laser beam, explicitly for the case without an optical cavity. We use the scheme to reconstruct the Wigner function of experimental data in perfect agreement with the expected Gaussian distribution of a thermal state of motion. This opens a route for quantum state preparation in levitated optomechanics.
| Type: | Article |
|---|---|
| Title: | Wigner Function Reconstruction in Levitated Optomechanics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1515/qmetro-2017-0003 |
| Publisher version: | http://dx.doi.org/10.1515/qmetro-2017-0003 |
| Language: | English |
| Additional information: | Copyright © 2017 Muddassar Rashid et al., published by De Gruyter Open. This work is licensed under the Creative Commons attribution non-commercial-NoDerivs 4.0 License. |
| Keywords: | Wigner function, quantum state tomography, levitated optomechanics, Gaussian state |
| 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/10066208 |
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