Uncertainty relation of mixed states by means of Wigner-Yanase-Dyson information
Uncertainty relation of mixed states by means of Wigner-Yanase-Dyson information
The variance of an observable in a quantum state is usually used to describe Heisenberg uncertainty relation. For mixed states, the variance includes quantum uncertainty and classical uncertainty. By means of the skew information and the decomposition of the variance, a stronger uncertainty relation was presented by Luo in [Phys. …