Chinese Journal of Quantum Electronics, Volume. 31, Issue 2, 186(2014)
Realization of quantum teleportation under control of a third party
A scheme of quantum teleportation was proposed, with a set of two-qubit maximally entangled states and three-qubit partially entangled states as a shared quantum channel, where the three-qubit partially entangled states as the channel can be physically realized from the generalized Greenberger-Horne-Zeilinger (GHZ) states by performing a H(Hadamard) gate and a CNOT gate on it. Compared to the channels of the general three-particle states, the states allow the transfer of a maximum number of bits from the sender to the receiver. The sender Alice measures her qubits in the Bell basis, then tells the measurement results to controller Charlie from a classical channel, now Charlie measures his qubits in the partially entangled Bell basis, and tells Bob of the results, at last in order to recover the teleported states successfully, Bob needs to perform a corresponding unitary transformation. In addition, this program uses a non-maximally entangled states as a shared channel, under the control of Charlie, the probability of the successful quantum teleportation may reach 100%.
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FU Yu-qi, CHEN Hang, FANG Jian-xing. Realization of quantum teleportation under control of a third party[J]. Chinese Journal of Quantum Electronics, 2014, 31(2): 186
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Received: Sep. 13, 2013
Accepted: --
Published Online: Mar. 31, 2014
The Author Email: Yu-qi FU (yuqifusuda@163.com)