We investigate the case in which the prior entanglement is not maximal and the initial state of the entangled pair of qubits being used for the dense coding is a mixed state.
本文提出了一个凭借混合纠缠态的超密编码方案，并分析了该方案成功传送信息的概率上界。
The result shows that:1. Detuning and phase decoherence have influence on maximal entangled fidelity for a arbitrary pure input state.
失谐量和退相干系数对输入态为任意纯态情况下的完全纠缠部分保真度具有一定的影响；
The result shows that:1. Detuning and phase decoherence have influence on maximal entangled fidelity for a arbitrary pure input state.
失谐量和退相干系数对输入态为任意纯态情况下的完全纠缠部分保真度具有一定的影响；
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