Recently, the Integrated Physics Research Group (IPRG) from the Millimeter-Wave Technology and System Application Laboratory at the School of Electronic Science and Engineering has made a significant breakthrough. Their research paper, titled 'Xiling: A Cryo-CMOS Manipulator Leveraging Dual 18-bit R-2R DACs for Single-Electron Transistor Operation at 60 mK', was published in the esteemed IEEE Journal of Solid-State Circuits (JSSC), a leading journal in the field of integrated circuits.

The study was spearheaded by Li Yingjie, a master's student from the Class of 2024 at the University of Electronic Science and Technology of China, who served as the first author. Professor Wang Cheng, a renowned expert in the field, acted as the corresponding author, providing invaluable guidance and oversight.

The paper introduces a groundbreaking low-temperature silicon-based quantum manipulation chip named 'Xiling'. This innovative chip is built upon dual 18-bit R-2R digital-to-analog converters (DACs), a technology that enables precise control and manipulation at the quantum level. What sets Xiling apart is its ability to achieve seamless integration with a single-electron transistor (SET) within the same temperature zone, operating at an incredibly low temperature of 60 mK. Through rigorous testing, the chip has successfully demonstrated clear Coulomb diamond characteristic diagrams, a testament to its exceptional performance and reliability.

Experimental data reveal that Xiling offers an impressive 18-bit voltage resolution (INL/DNL < 0.8 LSB), ensuring unparalleled precision in voltage control. It also boasts ultra-high voltage accuracy of 4.6 μV and ultra-low noise spectral density of 4.1 nV/Hz⁰·⁵ at 4 K, making it a standout performer in its class. Moreover, the chip operates with a remarkably low DC power consumption of only 60 μW, highlighting its energy efficiency and suitability for long-term quantum experiments.

This remarkable achievement not only validates Xiling's precise manipulation capabilities for quantum devices but also provides crucial technical support for the low-temperature integrated manipulation required to construct million-qubit quantum arrays. Such arrays are essential for advancing quantum computing and unlocking its full potential.

Prior to this publication, the research was accepted and presented at the prestigious 2025 IEEE International Solid-State Circuits Conference (ISSCC), where it garnered significant attention and acclaim. Additionally, it was featured in a Research Highlight by Nature Electronics, further underscoring its importance and impact in the scientific community.