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Chin. Phys. B, 2015, Vol. 24(7): 070302    DOI: 10.1088/1674-1056/24/7/070302
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Detection of the ideal resource for multiqubit teleportation

Zhao Ming-Jing (赵明镜)a, Chen Bin (陈斌)b, Fei Shao-Ming (费少明)b
a Department of Mathematics, School of Science, Beijing Information Science and Technology University, Beijing 100192, China;
b School of Mathematical Sciences, Capital Normal University, Beijing 100048, China
Abstract  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).
Keywords:  quantum teleportation      teleportation witness      teleportation resource  
Received:  26 September 2014      Revised:  05 February 2015      Accepted manuscript online: 
PACS:  03.65.Ud (Entanglement and quantum nonlocality)  
  03.67.Mn (Entanglement measures, witnesses, and other characterizations)  
Fund: Project 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), and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry of China.
Corresponding Authors:  Zhao Ming-Jing     E-mail:  zhaomingjingde@126.com

Cite this article: 

Zhao Ming-Jing (赵明镜), Chen Bin (陈斌), Fei Shao-Ming (费少明) Detection of the ideal resource for multiqubit teleportation 2015 Chin. Phys. B 24 070302

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