Scalable parallel ultrafast optical random bit generation based on a single chaotic microcomb

Author:

Li Pu,Li Qizhi,Tang Wenye,Wang Weiqiang,Zhang WenfuORCID,Little Brent E.,Chu Sai TekORCID,Shore K. Alan,Qin YuwenORCID,Wang Yuncai

Abstract

AbstractRandom bit generators are critical for information security, cryptography, stochastic modeling, and simulations. Speed and scalability are key challenges faced by current physical random bit generation. Herein, we propose a massively parallel scheme for ultrafast random bit generation towards rates of order 100 terabit per second based on a single micro-ring resonator. A modulation-instability-driven chaotic comb in a micro-ring resonator enables the simultaneous generation of hundreds of independent and unbiased random bit streams. A proof-of-concept experiment demonstrates that using our method, random bit streams beyond 2 terabit per second can be successfully generated with only 7 comb lines. This bit rate can be easily enhanced by further increasing the number of comb lines used. Our approach provides a chip-scale solution to random bit generation for secure communication and high-performance computation, and offers superhigh speed and large scalability.

Funder

National Natural Science Foundation of China

Stability Program of Science and Technology on Communication Security Laboratory

Guangdong Introducing Innovative and Entrepreneurial Teams

Publisher

Springer Science and Business Media LLC

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