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IOP Publishing, Journal of Physics A: Mathematical and Theoretical, 43(40), p. 13121-13130, 2007

DOI: 10.1088/1751-8113/40/43/019

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Multiparty-controlled teleportation of an arbitrarym-qudit state with a pure entangled quantum channel

Journal article published in 2007 by Ping Zhou, Xi-Han Li, Fu-Guo Deng ORCID, Hong-Yu Zhou
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We present a general scheme for multiparty-controlled teleportation of an arbitrary m-qudit ($d$-dimensional quantum system) state by using non-maximally entangled states as the quantum channel. The sender performs m generalized Bell-state measurements on her 2$m$ particles, the controllers take some single-particle measurements with the measuring basis $X_{d}$ and the receiver only need to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if he cooperates with all the controllers. All the parties can use some decoy photons to set up their quantum channel securely, which will forbid some a dishonest party to eavesdrop freely. This scheme is optimal as the probability that the receiver obtains the originally unknown m-qudit state equals to the entanglement of the quantum channel. ; Comment: 8 pages, 0 figures