On-chip source-device-independent quantum random number generator

Author:

Li Lang1ORCID,Cai Minglu,Wang Tao1ORCID,Tan Zicong1,Huang Peng1ORCID,Wu Kan,Zeng Guihua12

Affiliation:

1. Hefei National Laboratory

2. Shanghai Xun Tai Quantech Co., Ltd.

Abstract

Quantum resources offer intrinsic randomness that is valuable for applications such as cryptography, scientific simulation, and computing. Silicon-based photonics chips present an excellent platform for the cost-effective deployment of next-generation quantum systems on a large scale, even at room temperature. Nevertheless, the potential susceptibility of these chips to hacker control poses a challenge in ensuring security for on-chip quantum random number generation, which is crucial for enabling extensive utilization of quantum resources. Here, we introduce and implement an on-chip source-device-independent quantum random number generator (SDI-QRNG). The randomness of this generator is achieved through distortion-free on-chip detection of quantum resources, effectively eliminating classical noise interference. The security of the system is ensured by employing on-chip criteria for estimating security entropy in a practical chip environment. By incorporating a photoelectric package, the SDI-QRNG chip achieves a secure bit rate of 146.2 Mbps and a bare chip rate of 248.47 Gbps, with all extracted secure bits successfully passing the randomness test. Our experimental demonstration of this chip-level SDI-QRNG shows significant advantages in practical applications, paving the way for the widespread and cost-effective implementation of room-temperature secure QRNG, which marks a milestone in the field of QRNG chips.

Funder

Key RD Program of Guangdong province

Shanghai Municipal Science and Technology Major Project

National Natural Science Foundation of China

Innovation Program for Quantum Science and Technology

Publisher

Optica Publishing Group

Reference53 articles.

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