Zhong-Cheng Xiang

Zhong-Cheng Xiang specializes in the design, fabrication, and application of superconducting quantum devices. He has extensive expertise in superconducting quantum circuit design and fabrication, having developed various high-quality multi-qubit quantum chips, including one-dimensional (43 qubits, Chuang-tzu 1.0), ladder-type (30 qubits), tunable coupling multi-qubit (78 qubits, Chuang-tzu 2.0), and scalable quantum processors. He has established a comprehensive methodology covering conceptual design, circuit quantization, model simulation, layout design, and fabrication. Additionally, he has designed and fabricated auxiliary devices such as high-gain, wide-bandwidth Josephson parametric amplifiers (JPA), microwave photonic shapers, and tunable couplers. The decoherence time of aluminum-based qubits (double-junction SQUID) reaches hundreds of microseconds, a competitive benchmark. The quantum chips he has designed and fabricated, with stable parameters, have been provided to multiple domestic institutions, successfully supporting various quantum experiments and the launch of the Cloud Quantum Computing Platform (CQCP) with achievements widely reported by media outlets. In 2021, he was selected for the “Key Technical Talent” category of the Hundred Talents Program at the IOP, CAS, where he is responsible for superconducting quantum chip development.

Education and Work Experience

　　2016.09 – 2019.05: Ph.D. in Physics, Beihang University

　　2019.06 – 2021.11: Postdoctoral Fellow, Institute of Physics, Chinese Academy of Sciences (IOP, CAS).

　　2021.11 – Present: Deputy Chief Engineer, IOP, CAS.

　　2022.11 – Present: Part-time Associate Researcher, Beijing Academy of Quantum Information Sciences (BAQS).

Publications

　　He has published over 20 SCI papers and applied for 10 invention patents, including 4 in Physical Review Letters and 5 in Nature Communications.　

Selected Publications (#as a co-first author, *as a co-corresponding author):

[1] Yong-Yi Wang#, Yun-Hao Shi#, Zheng-Hang Sun#, Chi-Tong Chen, Zheng-An Wang, Kui Zhao, Hao-Tian Liu, Wei-Guo Ma, Ziting Wang, Hao Li, Jia-Chi Zhang, Yu Liu, Cheng-Lin Deng, Tian-Ming Li, Yang He, Zheng-He Liu, Zhen-Yu Peng, Xiaohui Song, Guangming Xue, Haifeng Yu, Kaixuan Huang*, Zhongcheng Xiang*, Dongning Zheng, Kai Xu*, and Heng Fang*, Exploring Hilbert-Space Fragmentation on a Superconducting Processor, PRX Quantum (2025).　

[2] Pengtao Song *, Zhong-Cheng Xiang*, Yu-Xiang Zhang , Zhan Wang , Xueyi Guo , Xinhui Ruan , Xiaohui Song , Kai Xu , Yvonne Y. Gao, Heng Fan , Dongning Zheng*,Coherent Control of Bloch Oscillations in a Superconducting Circuit, PRX Quantum 5, 020302 (2024)　

[3] Jian-Yong Zhou#, Si-Lu Zhao#, Ya Yang, Shi Xiao, D. He, Wei Nie, Ying Hu, Jing Lu, Le-Man Kuang, Yu-Xi Liu, Ming-Tang Deng, Dong-Ning Zheng, Zhong-Cheng Xiang*, Lan Zhou*, Z. H. Peng*, Experimental study of modified Tavis-Cummings model with directly-coupled superconducting artificial atoms, Optics Express, 32, 179 (2024).　

[4] Gui-Han Liang#, Xiao-Hui Song#, Cheng-Lin Deng#, Xu-Yang Gu, Yu Yan, Zheng-Yang Mei, Si-Lu Zhao, Yi-Zhou Bu, Yong-Xi Xiao, Yi-Han Yu, Ming-Chuan Wang, Tong Liu, Yun-Hao Shi, He Zhang, Xiang Li, Li Li, Jing-Zhe Wang, Ye Tian, Shi-Ping Zhao, Kai Xu*, Heng Fan*, Zhong-Cheng Xiang*, Dong-Ning Zheng*，Tunable Coupling Architectures with Capacitively Connecting Pads for Large-Scale Superconducting Multi-Qubit Processors，Physical Review Applied, 20, 044028 (2023).　

[5] Zhong-Cheng Xiang#, Kaixuan Huang#, Yu-Ran Zhang#, Tao Liu, Yun-Hao Shi, Cheng-Lin Deng, Tong Liu, Hao Li, Gui-Han Liang, Zheng-Yang Mei, Haifeng Yu, Guangming Xue, Ye Tian, Xiaohui Song, Zhi-Bo Liu, Kai Xu*, Dongning Zheng, Franco Nori*, Heng Fan*, Simulating Chern insulators on a superconducting quantum processor, Nature Communications 14, 5433 (2023),　

[6] Yun-Hao Shi#, Yu Liu#, Yu-Ran Zhang#, Zhong-Cheng Xiang#, Kaixuan Huang, Tao Liu, Yong-Yi Wang, Jia-Chi Zhang, Cheng-Lin Deng, Gui-Han Liang, Zheng-Yang Mei, Hao Li, Tian-Ming Li, Wei-Guo Ma, Hao-Tian Liu, Chi-Tong Chen, Tong Liu, Ye Tian, Xiaohui Song, S. P. Zhao, Kai Xu*, Dongning Zheng*, Franco Nori*, Heng Fan*, Quantum simulation of topological zero modes on a 41-qubit superconducting processor, Physical Review Letters 131, 080401 (2023)．

[7] Yun-Hao Shi#, Run-Qiu Yang#, ZhongchengXiang#, Zi-Yong Ge, Hao Li, Yong-Yi Wang, Kaixuan Huang, Ye Tian, Xiaohui Song, Dongning Zheng*,Kai Xu*, Rong-Gen Cai*, Heng Fan*, Quantum simulation of Hawking radiation and curved spacetime with a superconducting on-chip black hole, Nature Communications, 14, 3263 (2023).　

[8] Chi-Tong Chen#, Yun-Hao Shi#, Zhong-Cheng Xiang#, Zheng-An Wang, Tian-Ming Li, Hao-Yu Sun, Tian-Shen He, Xiaohui Song, Shiping Zhao, Dongning Zheng, Kai Xu*, Heng Fan*, ScQ cloud quantum computation for generating Greenberger-Horne-Zeilinger states of up to 10 qubits, Science China – Phys. Mech. & Astron. 65, 110362 (2022).

[9] Shou. Kuan. Zhao#, Zi-Yong Ge #, Zhong-Cheng Xiang#, G. M. Xue, H. S. Yan, Z. T. Wang , Zhan Wang, H. K. Xu , F. F. Su, Z. H. Yang, He Zhang, Yu-Ran Zhang , Xue-Yi Guo, Kai Xu, Ye Tian, H. F. Yu,*D. N. Zheng,* Heng Fan* and S. P. Zhao*, Probing Operator Spreading via Floquet Engineering in a Superconducting Circuit, Physical Review Letters, 129, 160602 (2022). (编辑推荐)

[10] Zhan Wang#, Zi-Yong Ge#, Zhong-Cheng Xiang#, Xiaohui Song, Rui-Zhen Huang, Pengtao Song, Xue-Yi Guo,Luhong Su, Kai Xu, Dongning Zheng, * and Heng Fan*,Observation of emergent Z2 gauge invariance in a superconducting circuit, Physical Review Research,4 ,L022060 (2022).

[11] Tong Liu, Shang Liu, Hekang Li, Hao Li, Kaixuan Huang, Zhong-Cheng Xiang, Xiaohui Song, Kai Xu*, Dongning Zheng*, Heng Fan*, Observation of entanglement negativity transition of pseudo-random mixed states, Nature Communications, 14, 1971 (2023).

[12] Kai Xu, Yu-Ran Zhang, Zheng-Hang Sun, Hekang Li, Pengtao Song, Zhong-Cheng Xiang, Kaixuan Huang, Hao Li, Yun-Hao Shi, Chi-Tong Chen, Xiaohui Song, Dongning Zheng, Franco Nori*, H. Wang*, and Heng Fan*, Metrological characterization of non-Gaussian entangled states of superconducting qubits, Physical Review Letters 128, 150501 (2022).

[13] Hao Li, Yong-Yi Wang, Yun-Hao Shi, Kaixuan Huang, Xiaohui Song, Gui-Han Liang, Zheng-Yang Mei, Bozhen Zhou, He Zhang, Jia-Chi Zhang, Shu Chen, Shiping Zhao, Ye Tian, Zhan-Ying Yang, Zhong-Cheng Xiang, Kai Xu*, Dongning Zheng*, Heng Fan*, Observation of critical phase transition in a generalized Aubry-André-Harper model on a superconducting quantum processor with tunable couplers, npj Quantum Information 9, 40 (2023).　

 [14] 相忠诚、宋小会、郭学仪、宋鹏涛、王战、郑东宁， 耦合强度可调的量子比特结构，中国发明专利申请号 2021109309311。（已授权）　

[15] 相忠诚、宋小会、梁珪涵、赵思路、梅铮扬、李想、李力、许凯、范桁、郑东宁，可大规模扩展超导量子比特的旁路电容可调耦合单元设计，申请号：2022107179977。　

[16] 梁珪涵、相忠诚、宋小会、赵思路、梅铮扬、许凯、范桁、郑东宁，一种跨模块可调耦合的量子比特芯片，专利申请号 2022116298462。　

[17] 宋鹏涛、宋小会、相忠诚、郭学仪、王战、郑东宁，约瑟夫森参量放大器及其制备方法，专利申请号 2021101912599。　

Projects and Grants　　

　　He currently leads a National Natural Science Foundation of China Youth Fund Project and a pre-research special project (sub-project leader), while participating as a key member in a National Natural Science Foundation of China Key Support Project. The team operates three dilution refrigerators in Laboratories A and C at the Institute of Physics, Chinese Academy of Sciences, and maintains microfabrication facilities in Buildings D and M, enabling the design, fabrication, and measurement of multi-superconducting qubits and auxiliary devices.