The observational entropy of quantum correlations and entanglement

 

Abstract: The well known connection between coarse-graining and statistical thermodynamics has recently been given a very precise formulation in terms of “observational entropy”, providing a useful notion of quantum entropy both in and out of equilibrium. In this talk I will describe how this approach gives rise to a family of measures of quantum correlation and entanglement, by minimizing observational entropy over different sets of local operations, and discuss the role of these correlations in non-equilibrium thermodynamics.