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Erschienen in: Quantum Information Processing 7/2013

01.07.2013

Analytic expressions of quantum correlations in qutrit Werner states

verfasst von: Biaoliang Ye, Yimin Liu, Jianlan Chen, Xiansong Liu, Zhanjun Zhang

Erschienen in: Quantum Information Processing | Ausgabe 7/2013

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Abstract

Quantum correlations in qutrit Werner states are extensively investigated with five popular methods, namely, original quantum discord (OQD) (Ollivier and Zurek in Phys Rev Lett 88:017901, 2001), measurement-induced disturbance (MID) (Luo in Phys Rev A 77:022301, 2008), ameliorated MID (AMID) (Girolami et al. in J Phys A Math Theor 44:352002, 2011), relative entropy (RE) (Modi et al. in Phys Rev Lett 104:080501, 2010) and geometric discord (GD) (Dakić et al. in Phys Rev Lett 105:190502, 2010). Two different analytic expressions of quantum correlations are derived. Quantum correlations captured by the former four methods are same and bigger than those obtained via the GD method. Nonetheless, they all qualitatively characterize quantum correlations in the concerned states. Moreover, as same as the qubit case, there exist quantum correlations in separable qutrit Werner states, too.

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Metadaten
Titel
Analytic expressions of quantum correlations in qutrit Werner states
verfasst von
Biaoliang Ye
Yimin Liu
Jianlan Chen
Xiansong Liu
Zhanjun Zhang
Publikationsdatum
01.07.2013
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 7/2013
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-013-0531-y

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