Quantum Correlations in a Family of Bipartite Qubit-Qutrit Separable States
YE Biao-Liang1 , LIU Yi-Min2 , LIU Xian-Song1 , ZHANG Zhan-Jun1**
1 School of Physics & Material Science, Anhui University, Hefei 2300392 Department of Physics, Shaoguan University, Shaoguan 512005
Abstract ：Quantum correlations in a family of bipartite separable qubit-qutrit quantum-classical correlated states are investigated by using two popular measures, i.e., the original quantum discord (OQD) method by Ollivier and Zurek [Phys. Rev. Lett. 88 (2001) 017901 ] and the measurement-induced disturbance (MID) method by Luo [Phys. Rev. A 77 (2008) 022301 ]. It is found that both of them are functions of a parameter partially characterizing the concerned states, however, quantum correlations evaluated via the convenient MID method are somewhat overestimated.
收稿日期: 2012-11-05
出版日期: 2013-03-02
:
03.65.Ta
(Foundations of quantum mechanics; measurement theory)
03.67.-a
(Quantum information)
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2013, Vol. 30 
