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Journal of Statistical Physics

, Volume 159, Issue 5, pp 1127–1153 | Cite as

Complete Positivity and Thermodynamics in a Driven Open Quantum System

  • Giuseppe Argentieri
  • Fabio Benatti
  • Roberto Floreanini
  • Marco Pezzutto
Article

Abstract

While it is well known that complete positivity guarantees the fulfilment of the second law of thermodynamics, its possible violations have never been proposed as a check of the complete positivity of a given open quantum dynamics. We hereby consider an open quantum micro-circuit, effectively describable as a two-level open quantum system, whose asymptotic current might be experimentally accessible. This latter could indeed be used to discriminate between its possible non-completely positive Redfield dynamics and a completely positive one obtained by standard weak-coupling limit techniques, at the same time verifying the fate of the second law of thermodynamics in such a context.

Keywords

Open quantum systems Complete positivity Second law of thermodynamics 

Notes

Acknowledgments

M.P. gratefully acknowledges the support from Fundação para a Ciência e a Tecnologia (Portugal), namely through programmes PTDC/POPH and Projects PEst-OE/EGE/UI0491/2013, PEst-OE/EEI/LA0008/2013, IT/QuSim and CRUP-CPU/CQVibes, partially funded by EU FEDER, from the EU FP7 Project LANDAUER (GA 318287), and support from FCT through scholarship SFRH/BD/52240/2013.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Giuseppe Argentieri
    • 1
  • Fabio Benatti
    • 2
    • 3
  • Roberto Floreanini
    • 3
  • Marco Pezzutto
    • 4
  1. 1.Department of Physics and AstronomyUniversity of ExeterExeterUK
  2. 2.Dipartimento di FisicaUniversità di TriesteTriesteItaly
  3. 3.Istituto Nazionale di Fisica NucleareSezione di TriesteTriesteItaly
  4. 4.Physics of Information Group, Instituto de Telecomunicações and Instituto Superior TécnicoUniversidade de LisboaLisbonPortugal

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