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Uncertainty relation of mixed states by means of Wigner-Yanase-Dyson information
Citation
Li, D., Li, X., Wang, F., Huang, H., & Kwek, L. C. (2009). Uncertainty relation of mixed states by means of Wigner-Yanase-Dyson information. Physical Review A, 79(5), Article 052106. https://doi.org/10.1103/PhysRevA.79.052106
Abstract
The variance of an observable in a quantum state is usually used to describe Heisenberg uncertainty relation. For mixed states, the variance includes quantum and classical uncertainties. By means of the skew information and the decomposition of the variance, a stronger uncertainty relation was presented by Luo [Phys. Rev. A 72, 042110 (2005)]. In this paper, by using Wigner-Yanase-Dyson information which is a generalization of the skew information, we propose a general uncertainty relation of mixed states.
Date Issued
2009
Publisher
American Physical Society
Journal
Physical Review A