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Measurement-based cooling of a nonlinear mechanical resonator

Lookup NU author(s): Dr Obinna AbahORCiD

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Abstract

We propose two measurement-based schemes to cool a nonlinear mechanical resonator down to energies close to that of its ground state. The protocols rely on projective measurements of a spin degree of freedom, which interacts with the resonator through a Jaynes-Cummings interaction. We show the performance of these cooling schemes, that can be either concatenated—i.e., built by repeating a sequence of dynamical evolutions followed by projective measurements—or single-shot. We characterize the performance of both cooling schemes with numerical simulations and pinpoint the effects of decoherence and noise mechanisms. Due to the ubiquity and experimental relevance of the Jaynes-Cummings model, we argue that our results can be applied in a variety of experimental setups.

Publication metadata

Author(s): Puebla R, Abah O, Paternostro M

Publication type: Article

Publication status: Published

Journal: Physical Review B

Year: 2020

Volume: 101

Issue: 24

Print publication date: 15/06/2020

Online publication date: 08/06/2020

Acceptance date: 08/06/2020

ISSN (print): 2469-9950

ISSN (electronic): 2469-9969

Publisher: American Physical Society

URL: https://doi.org/10.1103/PhysRevB.101.245410

DOI: 10.1103/PhysRevB.101.245410

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