Detection of Ideal Resource for Multiqubit Teleportation
Ming-Jing Zhao, Bin Chen, and Shao-Ming Fei
Contact the author: Please use for correspondence this email.
Submission date: 12. Aug. 2015
published in: Chinese physics / B, 24 (2015) 7, art-no. 070302
DOI number (of the published article): 10.1088/1674-1056/24/7/070302
PACS-Numbers: 03.65.Ud, 03.67.Mn
Download full preprint: PDF (110 kB)
We give a sufficient condition in detecting 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 fully separability of multiqubit states. Moreover, by proving the optimality of teleportation witnesses, we solve the open problem in [Phys. Rev. A 86, 032315 (2012)].