相位阻尼信道下三方QSS协议的一般性理论分析

he general theory of three-party QSS protocols with the noisy quantum channels is discussed. When the particles are transmitted through the noisy quantum channels, the initial three-qubit pure tripartite entangled states would be changed into mixed states. We analyze the security of QSS protocols with the different kinds of three-qubit tripartite entangled states under phase-damping channels, and figure out that for different kinds of initial states the successful probabilities Alice's secret can be recovered by legal agents are different. At the end, we discuss the security of one recent proposed QSS protocol, and show that the protocol would leak one bit of Alice's secret under the participant attack strategy.