Harnessing microcomb-based parallel chaos for random number generation and optical decision making

Abstract

Optical chaos is vital for various applications such as private communication, encryption, anti-interference sensing, and reinforcement learning. Chaotic microcombs have emerged as promising sources for generating massive optical chaos. However, their inter-channel correlation behavior remains elusive, limiting their potential for on-chip parallel chaotic systems with high throughput. In this study, we present massively parallel chaos based on chaotic microcombs and high-nonlinearity AlGaAsOI platforms. We demonstrate the feasibility of generating parallel chaotic signals with inter-channel correlation <0.04 and a high random number generation rate of 3.84 Tbps. We further show the application of our approach by demonstrating a 15-channel integrated random bit generator with a 20 Gbps channel rate using silicon photonic chips. Additionally, we achieved a scalable decision-making accelerator for up to 256-armed bandit problems. Our work opens new possibilities for chaos-based information processing systems using integrated photonics, and potentially can revolutionize the current architecture of communication, sensing and computations.

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

“…This will constrict the single-channel generation rate of random bits. Very recently, Shen et al reported a fast parallel random bit generation using chaotic MRRs 30 . Through employing a special material AlGaAsOI (Aluminum Gallium Arsenide on insulator) based MRR, they enhanced the bandwidth of chaotic microcomb to several GHz and then realized a parallel RBG with a single-channel rate of 18 Gb/s.…”

A hierarchical authorization image encryption algorithm based on two-dimensional time-varying delayed chaotic map

“…With the development of chaos theory, chaos science and other disciplines have intertwined with each other, forming many new branches of research. It has been widely applied in various fields such as mathematics [2], economics [3], information technology [4], engineering [5], biology [6] and so on. Chaotic sequences are inherently sensitive to the initial parameters as well as class randomness, and these properties coincide with the two basic principles of cryptographic design, diffusion and confusion [7].…”

Generation of parallel pulsed chaos based on Si3N4 microresonator and its application in imaging

“…Up to now, chaotic microcombs have been extensively applied in random numbers generation [8], massive parallel lidar [9][10][11] and other fields [12,13]. By using a demultiplexer to filter out chaotic microcombs in parallel, parallel chaos signals can be obtained.…”