Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session N14: Quantum Quenches and Heat Transport
11:30 AM–2:18 PM,
Wednesday, March 6, 2024
Room: M100E
Sponsoring
Unit:
DCMP
Chair: Mihir Pendharkar, Stanford University
Abstract: N14.00006 : Theoretical Investigation of non-Markovian Dynamics of an Optomechanical System Acting as an Autonomous Quantum Heat Engine*
12:30 PM–12:42 PM
Presenter:
Miika Rasola
(QCD Labs, Aalto University)
Authors:
Miika Rasola
(QCD Labs, Aalto University)
Vasilii Vadimov
(QCD Labs, Aalto University)
Mikko Möttönen
(QCD Labs, Aalto University)
In this work, we show that when the optical cavity of an optomechanical system is coupled to non-Markovian heat baths, it is possible to reach excitation generation in the mechanical mode. We study the classical analogue of the equations of motion of the optomechanical system with the key difference that instead of coherent drive, we subject the optical cavity only to thermal fluctuations from two baths with different temperatures. Further, we shall not resort to Markovian approximation, but rather study the full non-Markovian dynamics with coloured quantum noise. We derive quasiclassical Langevin equations describing the intricate non-linear dynamics of the system and study their solutions.
[1] S. Deffner and S. Campbell. Morgan and Claypool, 2019.
[2] H. Goswami and U. Harbola. Phys. Rev. A, 88:013842, Jul 2013
[3] A. Schmid, Jour. of Low Temp. Phys, vol. 49, no. 5-6, Dec. 1982
*Academy of Finland Centre grant No. 349594 (THEPOW)
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