Geodesic
Evaluating the~geometric measure of quantum discord
Teoretičeskaâ i matematičeskaâ fizika, Tome 171 (2012) no. 3, pp. 519-528

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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. 
@article{TMF_2012_171_3_a12,
     author = {Sh. Luo and Shuangshuang Fu},
     title = {Evaluating the~geometric measure of quantum discord},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {519--528},
     publisher = {mathdoc},
     volume = {171},
     number = {3},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2012_171_3_a12/}
}
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Sh. Luo; Shuangshuang Fu. Evaluating the~geometric measure of quantum discord. Teoretičeskaâ i matematičeskaâ fizika, Tome 171 (2012) no. 3, pp. 519-528. http://geodesic.mathdoc.fr/item/TMF_2012_171_3_a12/