40 Gb/s quantum random number generation based on optically sampled amplified spontaneous emission
Ya Guo, Qiang Cai, Pu Li, Zhiwei Jia, Bingjie Xu, Qianwu Zhang, Yamei Zhang, Ruonan Zhang, Zhensen Gao, K.A. Shore, Yuncai Wang
Abstract
We present a photonic approach for fast quantum random number generation based on optically sampled amplified spontaneous emission (ASE). This approach utilizes a terahertz optical asymmetric demultiplexer to sample the ASE and then digitize the sampled optical pulses into random bits using a multi-bit parallel comparator. A proof-of-concept experiment demonstrates that 40 Gb/s random bits with verified randomness can be obtained using our method. The current generation rate is mainly limited by the bandwidth of the available ASE source.
Topics & Concepts
Amplified spontaneous emissionRandomnessDemultiplexerPhotonicsRandom number generationPhysicsOptoelectronicsOpticsBandwidth (computing)Materials scienceComputer scienceMathematicsAlgorithmTelecommunicationsMultiplexingLaserStatisticsMultiplexerOptical Network TechnologiesQuantum Information and CryptographyPhotonic and Optical Devices