Fast physical random bit generator based on chaotic semiconductor lasers: Application to quantum cryptography
Fast physical random bit generator based on chaotic semiconductor lasers: Application to quantum cryptography
复制标题
基于混沌半导体激光器的快速物理随机位发生器：在量子密码学中的应用
DOI：
10.1109/cleoe-eqec.2009.5192510
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
Y. Tokura
中科院分区：
文献类型：
--
作者：
A. Uchida;T. Honjo;K. Amano;K. Hirano;H. Someya;H. Okumura;S. Yoshimori;K. Yoshimura;P. Davis;Y. Tokura
理想情况下，量子密码系统的实现需要生成真正的随机数来随机选择系统传输和检测参数。因此，快速非确定性随机比特生成器的可用性对于实现可在高比特率下运行的实用量子密码系统至关重要。随机物理现象如量子光噪声、电阻器中的热噪声和振荡器的频率抖动已被用作不确定性随机比特生成的物理熵源。然而，由于从物理噪声中提取比特的机制的限制，可用的非确定性发生器的比特率被限制在每秒几十兆比特。我们最近已经证明，通过标准的随机性统计测试，可以使用两个混沌半导体激光器[1]以高达1.7 Gbps（千兆位每秒）的快速速率生成连续的随机位序列流。
Implementations of quantum cryptography systems ideally require the generation of truly random numbers to randomly choose system transmission and detection parameters. Hence the availability of fast non-deterministic random bit generators is crucial for realising practical quantum cryptographic systems which can operate at high bit rates. Random physical phenomena such as quantum optical noise, thermal noise in resistors and frequency jitter of oscillators have been used as physical entropy sources for non-deterministic random bit generation. However, the bit rates of available non-deterministic generators have been limited to tens of megabits per second due to limitations of the mechanisms for extracting bits from physical noise. We have recently demonstrated that continuous streams of random bit sequences that pass standard statistical tests of randomness can be generated at fast rates of up to 1.7 Gbps (gigabits per second) by using two chaotic semiconductor lasers [1].