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Quantum cryptography over the FSO channel with PPM and FSK modulations

机译:具有PPM和FSK调制的FSO通道上的量子密码学

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摘要

Data encryption has become crucial in modern communication. Complex encryption algorithms are commonly used with the disadvantage that, with fast enough classical computers or not yet usable quantum computers, decryption is possible. Quantum key distribution (QKD) offers however unconditional security. This paper describes an innovative QKD protocol, the time-frequency (TF) BB84-like protocol, and discusses its ability to distribute an unconditionally secure key at a high data rate, particularly with regard to free-space links.
机译:数据加密已成为现代通信中的关键。通常使用复杂的加密算法,其缺点是,对于足够快的经典计算机或尚不可用的量子计算机,解密是可能的。但是,量子密钥分发(QKD)提供了无条件的安全性。本文介绍了一种创新的QKD协议,即类似于BB84的时频(TF)协议,并讨论了其以高数据速率分配无条件安全密钥的能力,尤其是在自由空间链路方面。

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