Thermodynamics of trajectories of a quantum harmonic oscillator coupled to N baths

Simon Pigeon, Lorenzo Fusco, André Xuereb, Gabriele De Chiara, Mauro Paternostro

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8 Citations (Scopus)
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We undertake a thorough analysis of the thermodynamics of the trajectories followed by a quantum harmonic oscillator coupled to $N$ dissipative baths by using a new approach to large-deviation theory inspired by phase-space quantum optics. As an illustrative example, we study the archetypal case of a harmonic oscillator coupled to two thermal baths, allowing for a comparison with the analogous classical result. In the low-temperature limit, we find a significant quantum suppression in the rate of work exchanged between the system and each bath. We further show how the presented method is capable of giving analytical results even for the case of a driven harmonic oscillator. Based on that result, we analyse the laser cooling of the motion of a trapped ion or optomechanical system, illustrating how the emission statistics can be controllably altered by the driving force.
Original languageEnglish
Article number013844
Number of pages5
JournalPhysical Review A (Atomic, Molecular, and Optical Physics)
Issue number1
Publication statusPublished - 24 Jul 2015

Bibliographical note

5 pages, 3 figures


  • quant-ph
  • cond-mat.stat-mech

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