Projects per year
Abstract
We address the outofequilibrium thermodynamics of an isolated quantum system consisting of a cavity optomechanical device. We explore the dynamical response of the system when driven out of equilibrium by a sudden quench of the coupling parameter and compute analytically the full distribution of the work generated by the process. We consider linear and quadratic optomechanical coupling, where the cavity field is parametrically coupled to either the position or the square of the position of a mechanical oscillator, respectively. In the former case we find that the average work generated by the quench is zero, whilst the latter leads to a nonzero average value. Through fluctuations theorems we access the most relevant thermodynamical figures of merit, such as the free energy difference and the amount of irreversible work generated. We thus provide a full charac terization of the outofequilibrium thermodynamics in the quantum regime for nonlinearly coupled bosonic modes. Our study is the first due step towards the construction and full quantum analysis of an optomechanical machine working fully out of equilibrium.
Original language  English 

Article number  035016 
Number of pages  15 
Journal  New Journal of Physics 
Volume  17 
DOIs  
Publication status  Published  31 Mar 2015 
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Projects
 3 Finished

R6423TCP: Thermodynamics of Mesoscopic Quantum Systems (THERMIQ)
Paternostro, M. & De Chiara, G.
18/12/2013 → 31/12/2016
Project: Research

R1339TCP: LightMatter interface detection of the full correlations distribution of quantum manybody systems
01/08/2013 → 13/09/2015
Project: Research

R8814TCP: Redefining quantumness in mesoscopic systems (RedMesaS)
Paternostro, M. & De Chiara, G.
01/08/2012 → 31/05/2016
Project: Research