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Suppression of Stokes scattering and improved optomechanical cooling with squeezed light

Muhammad Asjad, Stefano Zippilli, and David Vitali
Phys. Rev. A 94, 051801(R) – Published 28 November 2016

Abstract

We develop a theory of optomechanical cooling with a squeezed input light field. We show that Stokes heating transitions can be fully suppressed when the driving field is squeezed below the vacuum noise level at an appropriately selected squeezing phase and for a finite amount of squeezing. The quantum backaction limit to laser cooling can be therefore moved down to zero and the resulting final temperature is then solely determined by the ratio between the thermal phonon number and the optomechanical cooperativity parameter, independently of the actual values of the cavity linewidth and mechanical frequency. Therefore, driving with a squeezed input field allows us to prepare nanomechanical resonators, even with low resonance frequency, in their quantum ground state with a fidelity very close to one.

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  • Received 23 May 2016

DOI:https://doi.org/10.1103/PhysRevA.94.051801

©2016 American Physical Society

Physics Subject Headings (PhySH)

Atomic, Molecular & Optical

Authors & Affiliations

Muhammad Asjad, Stefano Zippilli, and David Vitali

  • Physics Division, School of Science and Technology, University of Camerino, via Madonna delle Carceri, 9, I-62032 Camerino (MC), Italy, and INFN, Sezione di Perugia, Italy

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Issue

Vol. 94, Iss. 5 — November 2016

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