Optical key distribution system using atmospheric turbulence as the randomness generating function: classical optical protocol for information assurance
Optical key distribution system using atmospheric turbulence as the randomness generating function: classical optical protocol for information assurance
复制标题
使用大气湍流作为随机生成函数的光密钥分配系统：用于信息保证的经典光学协议
DOI：
10.1117/1.oe.52.5.055008
复制
发表时间：
2013
影响因子：
1.3
通讯作者：
M. D. Stenner
中科院分区：
文献类型：
--
作者：
M. D. Drake;Christophe F. Bas;D.R. Gervais;P. F. Renda;D. Townsend;J. Rushanan;Joe Francoeur;N. Donnangelo;M. D. Stenner
抽象的。我们描述了一个实验实验室系统，该系统在两个光终端（标记为 Alice 和 Bob）之间生成和分发随机二进制序列比特流。通过用重合激光束探测两个终端之间的湍流大气的光通道来生成随机二进制序列。两束激光在通过大气光通道传播时会经历不同的相位延迟。在每个终端检测和采样差分相位延迟以产生原始随机比特流。随机比特流经过处理以消除比特错误，并通过隐私放大产生只有 Alice 和 Bob 知道的比特流。提供随机性的混沌物理机制也提供保密性。实验室系统产生了几比特/秒的秘密密钥比特率。对于具有大气湍流水平的较长通道长度的外部光通道，预测秘密比特率为 10 s 位/秒。
Abstract. We describe an experimental laboratory system that generates and distributes random binary sequence bit streams between two optical terminals (labeled Alice and Bob). The random binary sequence is generated through probing the optical channel of a turbulent atmosphere between the two terminals with coincident laser beams. The two laser beams experience differential phase delays while propagating through the atmospheric optical channel. The differential phase delays are detected and sampled at each terminal to yield raw random bit streams. The random bit streams are processed to remove bit errors and, through privacy amplification, to yield a bit stream known only to Alice and Bob. The same chaotic physical mechanism that provides randomness also provides confidentiality. The laboratory system yielded secret key bit rates of a few bits/second. For external optical channels over longer channel lengths with atmospheric turbulence levels, secret bit rates of 10 s of bits/second are predicted.