三量子系统的量子密码学

T. Radjabov, U.A. Rasulev
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引用次数: 0

摘要

我们首次尝试使用纠缠的三元量子系统来创建产生两个相同密钥的密码方案,用于量子密钥分发。与通常使用的二进制量子系统相比,二进制量子系统的优点是增加了编码密度和更高的安全裕度。将三元量子系统编码为光子的轨道角动量,即方位角指数分别为1 + 1,0和-1的拉盖尔-高斯模式。用相位全息图控制轨道角动量。在ekert型协议中,对三维贝尔不等式的违反验证了生成密钥的安全性。获得密钥时,三元量子系统错误率约为10%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Quantum cryptography with trinary quantum systems
We try to create the cryptographic scheme of producing two identical keys using, for the first time, entangled trinary quantum systems for quantum key distribution. The advantage of trinary quantum systems over the normally used binary quantum systems is an increased coding density and a higher security margin. The trinary quantum systems are encoded into the orbital angular momentum of photons, namely Laguerre -Gaussian modes with azimuthally index 1 +1, 0 and -1, respectively. The orbital angular momentum is controlled with phase holograms. In an Ekert-type protocol the violation of a three-dimensional Bell inequality verifies the security of the generated keys. A key is obtained with a trinary quantum system error rate of approximately 10%.
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