Quantum jump model for a system with a finite-size environment
  Measuring the thermodynamic properties of open quantum systems poses a major challenge. A calorimetric detection has been proposed as a feasible experimental scheme to measure work and fluctuation relations in open quantum systems. However, the detection requires a finite size for the environment, which influences the system dynamics. This process cannot be modeled with the standard stochastic approaches. We develop a quantum jump model suitable for systems coupled to a finite-size environment. With the method we study the common fluctuation relations and prove that they are satisfied. 
Samu Suomela, Aki Kutvonen, Tapio Ala-Nissila
quant-ph cond-mat.mes-hall cond-mat.stat-mech