Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 3: Quantum Information (Concepts and Methods) I
Q 3.7: Talk
Monday, March 9, 2020, 12:45–13:00, e001
Quantum fluctuation relations for generalized quantum measurements — •Konstantin Beyer1, Kimmo Luoma1, Roope Uola2, and Walter Strunz1 — 1TU Dresden, Institut für Theoretische Physik — 2University of Geneva, Group of Applied Physics
Quantum fluctuation theorems are mostly discussed in the framework of two-point measurement scenarios. The validity of the results often relies explicitly on projective measurements and tacitly on the use of Lüders instruments. From a quantum information point of view, these are severe restrictions and it is desirable to clarify to what extent they are necessary for the formulation of quantum fluctuation relations. Therefore, we broaden the view and investigate generalized quantum fluctuation theorems based on POVMs and different kinds of instruments, showing that the relations for standard two-point energy measurements can be seen as special cases of a more general class of POVM fluctuation theorems.