Thermodynamics of weakly measured quantum systems

Alonso, Jose Joaquin and Lutz, Eric and Romito, Alessandro (2016) Thermodynamics of weakly measured quantum systems. Physical review letters, 116 (8). ISSN 1079-7114

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Abstract

We consider continuously monitored quantum systems and introduce definitions of work and heat along individual quantum trajectories that are valid for coherent superpositions of energy eigenstates. We use these quantities to extend the first and second laws of stochastic thermodynamics to the quantum domain. We illustrate our results with the case of a weakly measured driven two-level system and show how to distinguish between quantum work and heat contributions. We finally employ quantum feedback control to suppress detector backaction and determine the work statistics.

Item Type: Journal Article
Journal or Publication Title: Physical review letters
Uncontrolled Keywords: /dk/atira/pure/subjectarea/asjc/3100
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 84996
Deposited By: ep_importer_pure
Deposited On: 02 Mar 2017 13:40
Refereed?: Yes
Published?: Published
Last Modified: 19 Oct 2019 01:02
URI: https://eprints.lancs.ac.uk/id/eprint/84996

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