Chowdhury, A;
Vezio, P;
Bonaldi, M;
Borrielli, A;
Marino, F;
Morana, B;
Pandraud, G;
... Marin, F; + view all
(2019)
Calibrated quantum thermometry in cavity optomechanics.
Quantum Science and Technology
, 4
(2)
, Article 024007. 10.1088/2058-9565/ab05f1.
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Abstract
Cavity optomechanics has achieved the major breakthrough of the preparation and observation of macroscopic mechanical oscillators in non-classical states. The development of reliable indicators of the oscillator properties in these conditions is important also for applications to quantum technologies. We compare two procedures to infer the oscillator occupation number, minimizing the necessity of system calibrations. The former starts from homodyne spectra, the latter is based on the measurement of the motional sideband asymmetry in heterodyne spectra. Moreover, we describe and discuss a method to control the cavity detuning, that is a crucial parameter for the accuracy of the latter, intrinsically superior procedure.
| Type: | Article |
|---|---|
| Title: | Calibrated quantum thermometry in cavity optomechanics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/2058-9565/ab05f1 |
| Publisher version: | https://doi.org/10.1088/2058-9565/ab05f1 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | optomechanics, quantum thermometry, micro-oscillators |
| 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.ucl.ac.uk/id/eprint/10072109 |
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