中国物理B ›› 2015, Vol. 24 ›› Issue (7): 70302-070302.doi: 10.1088/1674-1056/24/7/070302
赵明镜a, 陈斌b, 费少明b
Zhao Ming-Jing (赵明镜)a, Chen Bin (陈斌)b, Fei Shao-Ming (费少明)b
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).
中图分类号: (Entanglement and quantum nonlocality)