Extremal Entangled Four-Qubit Pure States with Respect to Multiple Entropy Measures  

作　　者：LIU Dan ZHAO Xin LONG Gui-Lu 

机构地区：[1]Department of Physics, Tsinghua University, Beijing 100084, China [2]Center of Quantum Information Science and Technology, Tsinghua University, Beijing 100084, China [3]School of Science, Dalian Nationalities University, Dalian 116600, China [4]Key Laboratory for Atomic and Molecular, Nano-Sciences, Tsinghua University, Beijing 100084, China

出　　处：《Communications in Theoretical Physics》2008年第2期329-332,共4页理论物理通讯（英文版）

基　　金：National Natural Science Foundation of China under Grant Nos.10325521 and 60433050;the 973 Program under Grant No.2006CB921106

摘　　要：Four-qubit entanglement has been investigated using a recent proposed entanglement measure, multiple entropy measures （MEMS）. We have performed optimization for the nine different families of states of four-qubit system. Some extremal entangled states have been found.

关 键 词：four-qubit entanglement multiple entanglement measures 

分 类 号：O413.1[理学—理论物理]