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中国物理学会期刊

基于超纠缠交换的量子密钥分发

CSTR: 32037.14.aps.56.1924

Quantum key distribution based on hyperentanglement swapping

CSTR: 32037.14.aps.56.1924
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  • 给出一种基于超纠缠交换的量子密钥分发方案,这个方案可以同时产生确定密钥和随机密钥,并且它的安全性不受任何损害.这个方案只需要一对在空间(路径)模式和极化模式上超纠缠的光子就能获得4 bit的密钥(2 bit随机密钥和2 bit确定密钥).在目前的实验条件下,这个方案可以通过线性光学来实现.

     

    We present a quantum key distribution scheme based on hyperentanglement swapping, which can simultaneously generate deterministic and random keys without the loss of security. The scheme only requires two\|photon states entangled both in spatial (path) and polarization modes, and such a photon pair can create 4 bit of secure keys (2 bit of random keys and 2 bit of deterministic keys). Our protocol can be implemented with linear optics under current technology.

     

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