This article is cited in 24 papers

Evaluating the geometric measure of quantum discord

Sh. Luo, Shuangshuang Fu

Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, P.R. China

Abstract: We derive analytic formulas for the geometric measure of quantum discord introduced by Dakic, Vedral, and Brukner for pure states and $(2{\times}n)$-dimensional states and establish a general lower bound for arbitrary states.

Keywords: quantum correlation, quantum discord, geometric measure of quantum discord, interlacing theorem for eigenvalues.

Received: 24.04.2011
Revised: 25.06.2011

DOI: 10.4213/tmf6901

 English version: Theoretical and Mathematical Physics, 2012, 171:3, 870–878

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