Sympathetic cooling of a radio-frequency LC circuit to its ground state in an optoelectromechanical system

Journal article (2021)

Authors

Nicola Malossi University of Camerino, Sezione di Perugia
Paolo Piergentili Sezione di Perugia, University of Camerino
J. Li Zhejiang University, QN/Quantum Nanoscience , QN/Groeblacher Lab - AS , Kavli institute of nanoscience Delft
E. Serra Trento Institute for Fundamental Physics and Application, Electronic Components, Technology and Materials - EEMCS , Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division
Riccardo Natali Sezione di Perugia, University of Camerino
Giovanni Di Giuseppe Sezione di Perugia, University of Camerino
David Vitali CNR-INO, University of Camerino, Sezione di Perugia
Department
QN/Quantum Nanoscience
Copyright: © 2021 Nicola Malossi, Paolo Piergentili, J. Li, E. Serra, Riccardo Natali, Giovanni Di Giuseppe, David Vitali
DOI: https://doi.org/10.1103/PhysRevA.103.033516
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Published Date

2021

Language

English

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Department

QN/Quantum Nanoscience

Abstract

We present a complete theory for laser cooling of a macroscopic radio-frequency LC electrical circuit by means of an optoelectromechanical system, consisting of an optical cavity dispersively coupled to a nanomechanical oscillator, which is in turn capacitively coupled to the LC circuit of interest. The driven optical cavity cools the mechanical resonator, which in turn sympathetically cools the LC circuit. We determine the optimal parameter regime where the LC resonator can be cooled down to its quantum ground state, which requires a large optomechanical cooperativity, and a larger electromechanical cooperativity. Moreover, comparable optomechanical and electromechanical coupling rates are preferable for reaching the quantum ground state.