Dvir Kafri, Sebastian Deffner
We derive a general quantum fluctuation theorem that explicitly accounts for the back action of quantum measurements on reduced systems. This theorem encompasses most thermodynamically relevant fluctuation theorems based on two-time measurements. As specific examples, we analyze the quantum Jarzynski equality for non-unitary dynamics and derive a fluctuation theorem for systems undergoing thermal changes. In addition, we show how a sharpened Holevo's bound follows as a consequence of our new general theorem.
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http://arxiv.org/abs/1207.2978
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