Journal
QUANTUM INFORMATION PROCESSING
Volume 12, Issue 1, Pages 237-249Publisher
SPRINGER
DOI: 10.1007/s11128-012-0364-0
Keywords
Quantum information; Quantum state sharing; Probabilistic channel; Multi-qubit state
Funding
- National Natural Science Foundation of China [61104002, 6090403, 60805029]
- Natural Science Foundation of Jiangsu Province [BK2011283]
- Australian Research Council [DP1095540]
- Australian Research Council [DP1095540] Funding Source: Australian Research Council
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We present a new scheme to share an arbitrary multi-qubit state between n agents via various probabilistic channels under cooperation of m-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.
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