Sympathetic cooling of a radio-frequency LC circuit to its ground state in an optoelectromechanical system
Nicola Malossi (Sezione di Perugia, University of Camerino)
Paolo Piergentili (University of Camerino, Sezione di Perugia)
Jie Li (TU Delft - QN/Groeblacher Lab, Kavli institute of nanoscience Delft, TU Delft - QN/Quantum Nanoscience, Zhejiang University)
E Serra (TU Delft - Electronic Components, Technology and Materials, Institute of Materials for Electronics and Magnetism, Nanoscience-Trento-FBK Division, Trento Institute for Fundamental Physics and Application)
Riccardo Natali (University of Camerino, Sezione di Perugia)
Giovanni Di Di Giuseppe (Sezione di Perugia, University of Camerino)
D. Vitali (Istituto Nazionale di Ottica, Consiglio Nazionale delle Ricerche, University of Camerino, Sezione di Perugia)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
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.