Detection of the ideal resource for multiqubit teleportation  

作　　者：赵明镜 陈斌 费少明 

机构地区：[1]Department of Mathematics,School of Science,Beijing Information Science and Technology University [2]School of Mathematical Sciences,Capital Normal University

出　　处：《Chinese Physics B》2015年第7期88-91,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.11401032,11275131,and 61473325);the Foundation of Beijing Information Science and Technology University,China(Grant No.1425032);the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry of China

摘　　要：We give a sufficient condition for detecting the entanglement resource for perfect multiqubit teleportation. The criterion involves only local measurements on some complementary observables and can be experimentally implemented. It is also a necessary condition for full separability of multiqubit states. Moreover, by proving the optimality of teleportation witnesses, we solve the open problem in Phys. Rev. A 86, 032315（2012）.We give a sufficient condition for detecting the entanglement resource for perfect multiqubit teleportation. The criterion involves only local measurements on some complementary observables and can be experimentally implemented. It is also a necessary condition for full separability of multiqubit states. Moreover, by proving the optimality of teleportation witnesses, we solve the open problem in Phys. Rev. A 86, 032315（2012）.

关 键 词：quantum teleportation teleportation witness teleportation resource 

分 类 号：O413.1[理学—理论物理]