we present a robust and universal quantum secret sharing protocol with four-qubit decoherence-free （DF） states against collective noise. The transmission＇s safety is ensured by the nonorthogonality of the noiseless...we present a robust and universal quantum secret sharing protocol with four-qubit decoherence-free （DF） states against collective noise. The transmission＇s safety is ensured by the nonorthogonality of the noiseless states traveling on the quantum channel. Although this scheme uses entangled states for encoding, only single-particle product measurements are required.展开更多
基金Supported by the National High-Tech Research,Development Plan of China under Grant Nos.2009AA01Z441National Basic Research Program of China(973 Program 2007CB311100)+3 种基金the National Natural Science Foundation of China under Grant Nos.60873191, 60821001,61003290The Specialized Research Fund for the Doctoral Program of Higher Education under Grant No.20091103120014Beijing Natural Science Foundation under Grant Nos.1093015 and 1102004the ISN open Foundation
文摘we present a robust and universal quantum secret sharing protocol with four-qubit decoherence-free （DF） states against collective noise. The transmission＇s safety is ensured by the nonorthogonality of the noiseless states traveling on the quantum channel. Although this scheme uses entangled states for encoding, only single-particle product measurements are required.
