Aranas, EB;
Akram, MJ;
Malz, D;
Monteiro, TS;
(2017)
Quantum noise spectra for periodically driven cavity optomechanics.
Physical Review A
, 96
(6)
, Article 063836. 10.1103/PhysRevA.96.063836.
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Abstract
A growing number of experimental setups in cavity optomechanics exploit periodically driven fields. However, such setups are not amenable to analysis by using simple, yet powerful, closed-form expressions of linearized optomechanics, which have provided so much of our present understanding of experimental optomechanics. In the present paper, we formulate a method to calculate quantum noise spectra in modulated optomechanical systems, which we analyze, compare, and discuss with two other recently proposed solutions: we term these (i) frequency-shifted operators, (ii) Floquet [Phys. Rev. A 94, 023803 (2016)], and (iii) iterative analysis [New J. Phys. 18, 113021 (2016)]. We prove that (i) and (ii) yield equivalent noise spectra and find that (iii) is an analytical approximation to (i) for weak modulations. We calculate the noise spectra of a doubly modulated system describing experiments of levitated particles in hybrid electro-optical traps. We show excellent agreement with Langevin stochastic simulations in the thermal regime and predict squeezing in the quantum regime. Finally, we reveal how otherwise-inaccessible spectral components of a modulated system can be measured in heterodyne detection through an appropriate choice of modulation frequencies.
| Type: | Article |
|---|---|
| Title: | Quantum noise spectra for periodically driven cavity optomechanics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.96.063836 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.96.063836 |
| 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, Optics, Physics, Atomic, Molecular & Chemical, Physics, DIFFERENTIAL-EQUATIONS, MECHANICAL OSCILLATOR, GROUND-STATE, MOTION |
| 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/10042462 |
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