Multi-party quantum state sharing via various probabilistic channels

Authors:
Min Jiang;Daoyi Dong
Affiliations:
School of Electronics & Information Engineering, Soochow University, Suzhou, China 215006;Institute of Cyber-Systems and Control, State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China 310027 and School of Engineering and Information Technology, Uni ...
Venue:
Quantum Information Processing
Year:
2013

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Abstract

We present a new scheme to share an arbitrary multi-qubit state between n agents via various probabilistic channels under cooperation of m驴1 controllers with a certain probability. Compared with existing ones in this literature, our scheme involves various probabilistic channels, which weakens the requirement for quantum channels. The proposed scheme is symmetric which means even though the designed receiver has no capability of adopting appropriate strategies in introducing auxiliary qubits and performing two-qubit gates, it is still possible to faithfully share a multi-qubit state with assistance of other participants. This scheme involves only single-qubit measurements, CNOT gates, and local two-qubit gates with an auxiliary qubit, which makes it more convenient for physical realization.