Fluctuation relation for qubit calorimetry

Research output: Contribution to journalArticle


  • Antti Kupiainen
  • Paolo Muratore-Ginanneschi
  • J.P. Pekola

  • Kay Schwieger

Research units

  • University of Helsinki


Motivated by proposed thermometry measurement on an open quantum system, we present a simple model of an externally driven qubit interacting with a finite-sized fermion environment acting as a calorimeter. The derived dynamics is governed by a stochastic Schrödinger equation coupled to the temperature change of the calorimeter. We prove a fluctuation relation and deduce from it a notion of entropy production. Finally, we discuss the first and second law associated with the dynamics.


Original languageEnglish
Article number062127
Pages (from-to)1-6
JournalPhysical Review E
Issue number6
Publication statusPublished - 20 Dec 2016
MoE publication typeA1 Journal article-refereed

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