A Unified Approach to Local Quantum Uncertainty and Interferometric Power by Metric Adjusted Skew Information

Entropy (Basel). 2021 Feb 24;23(3):263. doi: 10.3390/e23030263.

Abstract

Local quantum uncertainty and interferometric power were introduced by Girolami et al. as geometric quantifiers of quantum correlations. The aim of the present paper is to discuss their properties in a unified manner by means of the metric adjusted skew information defined by Hansen.

Keywords: Fisher information; interferometric power; local quantum uncertainty; matrix means; metric adjusted skew information; operator monotone functions; quantum Fisher information.