Please use this identifier to cite or link to this item: https://doi.org/10.1140/epjd/e2011-20017-4
Title: Averaged Wigner-Yanase-Dyson information as a quantum uncertainty measure
Authors: Li, X.
Li, D.
Huang, H.
Li, X.
Kwek, L.C. 
Issue Date: Sep-2011
Citation: Li, X., Li, D., Huang, H., Li, X., Kwek, L.C. (2011-09). Averaged Wigner-Yanase-Dyson information as a quantum uncertainty measure. European Physical Journal D 64 (1) : 147-153. ScholarBank@NUS Repository. https://doi.org/10.1140/epjd/e2011-20017-4
Abstract: The average of the skew information over the observables was proposed by Luo as a quantum uncertainty measure. In this paper, we investigate the interesting properties of Wigner-Yanase-Dyson (WYD) information, which is a generalization of skew information. Then, by averaging WYD information over the observables we propose a general quantum uncertainty measure of mixed states, and study the properties of the measure. Note that the general quantum uncertainty measure depends on the parameter α and reduces to Luo's measure when α is equal to 1/2. To get rid of the parameter α, we propose the average of the general measure over the parameter α as a quantum uncertainty measure of mixed states and discuss its properties. The two measures can be considered as the intrinsic properties of mixed state. The construction is reminiscent of the generalized entropies that have shown to be useful in many applications. © 2011 EDP Sciences, Società Italiana di Fisica, Springer-Verlag.
Source Title: European Physical Journal D
URI: http://scholarbank.nus.edu.sg/handle/10635/112385
ISSN: 14346060
DOI: 10.1140/epjd/e2011-20017-4
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

8
checked on Aug 19, 2019

WEB OF SCIENCETM
Citations

5
checked on Aug 19, 2019

Page view(s)

40
checked on Aug 16, 2019

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.