计算机科学 ›› 2023, Vol. 50 ›› Issue (6A): 220700024-4.doi: 10.11896/jsjkx.220700024
向生建
XIANG Shengjian
摘要： 量子隐形传态是量子通信中研究的热点之一。 有别于传统的隐形传态方案,短距离隐形传态通过加强两个参与者距离上的限制以进一步节约宝贵的量子纠缠资源。但这样的限制同时也增加了传输双方作弊的可能。为此,文中在现有短距离隐形传输研究的基础上加入第三方控制者,提高了传输过程的安全性。同时,由于粒子在传输过程中不可避免地会遭受信道噪声的影响,理想环境下的隐形传输是不可能的。保真度是刻画传输前后量子态相似性的工具,文中进一步分析了作为普遍使用的噪声信道模型即Pauli噪声信道对二粒子受控短距离隐形传输保真度的影响。最终得出,不同类型的Pauli噪声信道下,发送者所传输二粒子的纠缠程度不同保真度也不同。这为短距离隐形传输的实验研究以及量子网络发展提供了一些参考价值。
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