量子密码学（Quantum Cryptography）是一门很有前途的新领域，许多国家的人员都在研究它，而且在一定的范围内进行了试验。离实际应用只有一段不很长的距离。量子密码体系采用量子态作为信息载体，经由量子通道在合法的用户之间传送密钥。量子密码的安全性由量子力学原理所保证
量子密码学是实现通信系统绝对安全的有效解决方案。
Quantum cryptography is considered as a promising solution towards absolute security in communication systems.
上世纪下半叶以来，科学家在量子力学的基础上建立了量子密码学的概念。
In the latter part of last century, scientists founded the conception of quantum cryptography on the basis of quantum mechanics.
然而，基于量子物理原理的量子密码学已被证明是保密通信中密钥安全分配的有效手段。
Nevertheless, quantum cryptography, which is based on quantum physics, has been proved to be an effective technique for secure key distribution.
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