Fluctuation Relation for Qubit-Calorimetry
  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 calorimeter. The derived dynamics is governed by a stochastic Schr\"odinger 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 to the dynamics. 
Antti Kupiainen, Paolo Muratore-Ginanneschi, Jukka Pekola, Kay   Schwieger
quant-ph cond-mat.mes-hall cond-mat.stat-mech