Introduction of quantum discord and its calculation in a certain system
LI Kai1,LIU Yi1,ZHU Qin-sheng2,WU Hao2,WU Ming-he2,TENG Bao-hua2
College Physics . 2017, (9): 69 -72 .  DOI: 10. 16854 /j. cnki. 1000-0712. 2017. 09. 016