Chip-Based Electronic System for Quantum Key Distribution

Zhang, Siyuan1; Mao, Wei2; Luo, Shaobo3; Sun, Shihai1

2024-05-01

10.3390/e26050382

ENTROPY   影响因子和分区

1099-4300

Quantum Key Distribution (QKD) has garnered significant attention due to its unconditional security based on the fundamental principles of quantum mechanics. While QKD has been demonstrated by various groups and commercial QKD products are available, the development of a fully chip-based QKD system, aimed at reducing costs, size, and power consumption, remains a significant technological challenge. Most researchers focus on the optical aspects, leaving the integration of the electronic components largely unexplored. In this paper, we present the design of a fully integrated electrical control chip for QKD applications. The chip, fabricated using 28 nm CMOS technology, comprises five main modules: an ARM processor for digital signal processing, delay cells for timing synchronization, ADC for sampling analog signals from monitors, OPAMP for signal amplification, and DAC for generating the required voltage for phase or intensity modulators. According to the simulations, the minimum delay is 11ps, the open-loop gain of the operational amplifier is 86.2 dB, the sampling rate of the ADC reaches 50 MHz, and the DAC achieves a high rate of 100 MHz. To the best of our knowledge, this marks the first design and evaluation of a fully integrated driver chip for QKD, holding the potential to significantly enhance QKD system performance. Thus, we believe our work could inspire future investigations toward the development of more efficient and reliable QKD systems.

quantum key distribution quantum communication integrated electrical chip

SCI

英语

其他

Physics

Physics, Multidisciplinary

WOS:001232967200001

MDPI

Web of Science

1.Sun Yat Sen Univ, Sch Elect & Commun Engn, Shenzhen 518107, Peoples R China
2.Xidian Univ, Hangzhou Res Inst, 8 Qiannong East Rd, Hangzhou 710071, Peoples R China
3.Southern Univ Sci & Technol, Sch Microelect, Shenzhen 518055, Peoples R China

Zhang, Siyuan,Mao, Wei,Luo, Shaobo,et al. Chip-Based Electronic System for Quantum Key Distribution[J]. ENTROPY,2024,26(5).

Zhang, Siyuan,Mao, Wei,Luo, Shaobo,&Sun, Shihai.(2024).Chip-Based Electronic System for Quantum Key Distribution.ENTROPY,26(5).

Zhang, Siyuan,et al."Chip-Based Electronic System for Quantum Key Distribution".ENTROPY 26.5(2024).