Faithful Teleportation with Arbitrary Pure or Mixed States
Ming-Jing Zhao, Zong-Guo Li, Shao-Ming Fei, Zhi-Xi Wang, and Xianqing Li-Jost
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Submission date: 27. Aug. 2010
published in: Journal of physics / A, 44 (2011) 21, art-no. 215302
DOI number (of the published article): 10.1088/1751-8113/44/21/215302
with the following different title: Faithful teleportation with arbitrary pure or mixed resource states
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Faithful teleportation of an unknown state in is considered, where a general entangled state is served as the resource. The necessary conditions of mixed states to complete perfect teleportation are proved. Based on these results, the necessary and sufficient conditions of faithful teleportation channel in and are derived. It is shown that for in , must be a maximally entangled state, while for in , must be a mixed or pure maximally entangled state. Furthermore, the sender's measurements must be all projectors of maximally entangled states. On the other hand, for , we present some classes of states for faithful teleportation.