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Superconducting quantum circuits, centered on the nonlinear inductance of Josephson junctions, use micro- and nanofabricated artificial circuits to construct quantized, designable, and controllable "artificial atoms". They constitute one of the most competitive physical platforms for realizing universal quantum computation. In this system, qubits, tunable couplers, microwave resonators, and transmission lines together form an on-chip quantum electrodynamics architecture. By applying microwave fields and magnetic-flux biases, one can precisely control the coherent evolution of quantum states, energy-level structures, interaction strengths, and many-body Hamiltonians on nanosecond timescales. This provides a highly controllable platform for investigating fundamental physical problems such as light–matter interaction, open quantum system dynamics, many-body quantum physics, and quantum error correction. In recent years, superconducting quantum computing has made rapid progress in single-qubit gates, two-qubit gates, prototype quantum error-correction experiments, and intermediate-scale quantum processors. Nevertheless, how to further scale up the number of qubits while maintaining high coherence and high-fidelity control, suppressing crosstalk and leakage, and realizing fault-tolerant logical quantum operations remains a central scientific challenge in the field.

Our group has long been engaged in research on scalable superconducting quantum computing, with a focus on understanding and controlling coherence, coupling, and many-body dynamics in artificial quantum systems. We further apply these physical mechanisms to quantum information processing, quantum algorithm demonstrations, and quantum error-correction experiments, laying the foundation for the construction of large-scale fault-tolerant superconducting quantum processors.

Future research will further aim at realizing scalable and fault-tolerant superconducting quantum computation. Building on established micro- and nanofabrication platforms, high-performance cryogenic systems, and room-temperature quantum control and measurement systems, we will focus on the following research directions:

• Research on superconducting quantum device materials, Josephson junction fabrication, and the physical mechanisms of decoherence;

• Physics of crosstalk, leakage, quasiparticle noise, and correlated errors;

• High-fidelity quantum gates, dynamic coupling control, and scalable quantum control methods;

• Quantum error-correction, encoding and decoding, and logical quantum operations for fault-tolerant quantum computation;

• Experiments in quantum simulation, quantum machine learning, and quantum information processing.

We welcome outstanding undergraduate students, graduate students, and young researchers with backgrounds in physics, condensed matter physics, microelectronics, electronic information, quantum information, computer science, automation, mathematics, and related fields. The research directions are suitable for students interested in quantum mechanics, superconducting circuits, microwave engineering, cryogenic experiments, quantum control, quantum error correction, and scalable quantum computing architectures. Applications and inquiries from engineers, postdoctoral researchers, and special research fellows are also warmly welcome.

2026

1. Ze-An Zhao, Xiao-Yan Yang, Peng Wang, Ren-Ze Zhao, Sheng Zhang, Zi-Hao Fu, Sheng-Ri Liu, Tian-Le Wang,Hai-Feng Zhang, Peng Duan*, Ping-Guo Guo*.  Overcoming the speed-fidelity trade-off in fast CZ gates via cyclic control. Physical Review Letters, 2026, accepted.

2. Tian-Le Wang, Peng Wang, Ze-An Zhao, Sheng Zhang, Ren-Ze Zhao, Xiao-Yan Yang, Hai-Feng Zhang, Zhi-Fei Li, Yuan Wu, Liang-Liang Guo, Yong Chen, Hao-Ran Tao, Lei Du, Chi Zhang, Zhi-Long Jia, Wei-Cheng Kong, Peng Duan*,Ming Gong*, Guo-Ping Guo*. Remote Entanglement Generation Via Enhanced Quantum State Transfer. PRX Quantum, 2026, 7(1):010348.

3. Hai-Feng Zhang, Zhao-Yun Chen*, Peng Wang, Liang-Liang Guo, Tian-Le Wang, Xiao-Yan Yang, Ren-Ze Zhao, Ze-An Zhao, Sheng Zhang, Lei Du, Hao-Ran Tao, Zhi-Long Jia, Wei-Cheng Kong, Huan-Yu Liu, Yang Yang, Athanasios V. Vasilakos, Yu-Chun Wu, Ji Guan*, Peng Duan*, Guo-Ping Guo*. Experimental Robustness Benchmarking of Quantum Neural Networks on a Superconducting Quantum Processor. Science China Physics, Mechanics & Astronomy, 2026, 69(6):260315.

4. Xiao-Yan Yang, Peng Wang, Ran Guo, Hai-Feng Zhang, Tian-Le Wang, Ze-An Zhao, Sheng Zhang, Ren-Ze Zhao, Zhi-Fei Li, Yuan Wu, Zhi-Long Jia, Wei-Cheng Kong, Gang Cao, Peng Duan*, Guo-Ping Guo*. Fast and Accurate Flux-Crosstalk Characterization in Superconducting-Qubit Circuits. Physical Review Applied, 2026, 25(3):034007.

5. Lei Du, Hao-Ran Tao, Chi Zhang, Liang-Liang Guo, Yong Chen, Xin Tian, Hai-Feng Zhang, Zhi-Long Jia, Peng Duan*, Guo-Ping Guo*. Laser Annealing Enabled Resistance Reduction and Stable Frequency Tuning of Superconducting Qubits. Applied Physics Letters, 2026, 128(7):074001.

6. Sheng Zhang, Peng Duan*, Yun-Jie Wang, Tian-Le Wang , Peng Wang, Ren-Ze Zhao, Xiao-Yan Yang, Ze-An Zhao, Hai-Feng Zhang, Zhi-Fei Li, Yuan Wu, Hao-Ran Tao, Liang-Liang Guo, Lei Du, Yong Chen, Chi Zhang, Zhi-Long Jia, Wei-Cheng Kong, Zhao-Yun Chen, Zhuo-Zhi Zhang, Xiang-Xiang Song, Yu-Chun Wu, Guo-Ping Guo. SCIENCE CHINA Information Sciences, 2026, accpted.

7. Hai-Feng Zhang, Zhao-Yun Chen, Peng Duan*, Guo-Ping Guo*. Quantum Denfensive Distillation, Chinese Physics B, 2026, accepted.
   

2025

1. Jiaxuan Zhang, Zhao-Yun Chen, Yun-Jie Wang, Bin-Han Lu, Hai-Feng Zhang, Jia-Ning Li, Peng Duan*, Yu-Chun Wu*, Guo-Ping Guo*. Demonstrating a Universal Logical Gate Set in Error-Detecting Surface Codes on a Superconducting Quantum Processor. npj Quantum Information, 2025, 11(1):177.

2. Zhi-Long Jia, Lei Du, Hao-Ran Tao, Yong Chen, Hui Yang, Chi Zhang, Guo-Liang Xu, Long Shen, Wang-Sheng Xu, Nian-Ci Wang, Peng Duan*, Guo-Ping Guo*. Frequency Trimming of Superconducting Qubits Using RF-Biased ICP Annealing. Applied Physics Express,2025,18(6):066501.

2024

1. Hao-Ran Tao, Chi Zhang, Lei Du, Xin-Xin Yang, Liang-Liang Guo, Yong Chen, Hai-Feng Zhang, Zhi-Long Jia, Wei-Cheng Kong, Peng Duan*, Guo-Ping Guo*. Fabrication and Characterization of Low Loss Niobium Airbridges for Superconducting Quantum Circuits. Applied Physics Letters, 2024, 125(3):034001.

2. Yong Chen, Peng Duan*,Zhi-Long Jia, Xin-Xin Yang, Lei Du, Hao-Ran Tao, Chi Zhang, Liang-Liang Guo, Hai-Feng Zhang, Tian-Le Wang, Ze-An Zhao, Xiao-Yan Yang, Sheng Zhang, Ren-Ze Zhao, Peng Wang, Wei-Cheng Kong,Guo-Ping Guo*. Distinguishing the Impact of Oxidation on the Josephson Junction Oxide Barrier through the 1/f Behavior. Applied Physics Letters, 2024, 125(9):094001.

3. Xiao-Yan Yang, Hai-Feng Zhang, Lei Du, Hao-Ran Tao, Liang-Liang Guo, Tian-Le Wang, Zhi-Long Jia, Wei-Cheng Kong, Zhao-Yun Chen, Peng Duan*, Guo-Ping Guo*. Fast, Universal Scheme for Calibrating Microwave Crosstalk in Superconducting Circuits. Applied Physics Letters, 2024, 125(4):044001.

4. Liang-Liang Guo, Peng Duan*,Sheng Zhang, Xin-Xin Yang, Chi Zhang, Lei Du, Hai-Feng Zhang, Hao-Ran Tao, Tian-Le Wang, Zhi-Long Jia, Zhao-Yun Chen*, Guo-Ping Guo*. Universal Scalable Characterization and Correction of Pulse Distortions in Controlled Quantum Systems. Physical Review Applied, 2024, 21(6):064060.

5. Hao-Ran Tao, Lei Du, Liang-Liang Guo, Yong Chen, Hai-Feng Zhang, Xiao-Yan Yang, Guo-Liang Xu, Chi Zhang, Zhi-Long Jia, Peng Duan*,Guo-Ping Guo*. In-Situ Deposited Anti-Aging TiN Capping Layer for Nb Superconducting Quantum Circuits. Chinese Physics B, 2024, 33(9):090310.

6. Lei Du, Hao-Ran Tao, Liang-Liang Guo, Hai-Feng Zhang, Yong Chen, Xin Tian, Chi Zhang, Zhi-Long Jia, Peng Duan*, Guo-Ping Guo*. In Situ Non-Destructive Measurement of Josephson Junction Resistance Using Fritting Contact Technique. Chinese Physics B, 2024, 33(11):110309.

7. Liang-Liang Guo, Peng Duan*,Lei Du, Hai-Feng Zhang, Hao-Ran Tao, Yong Chen, Xiao-Yan Yang, Chi Zhang, Zhi-Long Jia, Wei-Cheng Kong, Zhao-Yun Chen,Guo-Ping Guo*. Correction of Microwave Pulse Reflection by Digital Filters in Superconducting Quantum Circuits. Chinese Physics B, 2024, 33(9):090303.

2023

1. Chi Zhang, Tian-Le Wang, Liang-Liang Guo, Xiao-Yan Yang, Xin-Xin Yang, Peng Duan, Zhi-Long Jia, Wei-Cheng Kong, Guo-Ping Guo. Characterization of Tunable Coupler without a Dedicated Readout Resonator in Superconducting Circuits. Applied Physics Letters, 2023, 122(2):024001.

2. Xin-Xin Yang,Xiao-Yan Yang, Liang-Liang Guo, Lei Du, Peng Duan, Zhi-Long Jia, Hai-Ou Li, Guo-Ping Guo*. Locating Two-Level Systems in a Superconducting Xmon Qubit. Applied Sciences, 2023, 13(11):6672.

3. Chi Zhang,Tian-Le Wang, Ze-An Zhao, Xiao-Yan Yang, Liang-Liang Guo, Zhi-Long Jia, Peng Duan, Guo-Ping Guo*.Fast and Perfect State Transfer in Superconducting Circuit with Tunable Coupler. Chinese Physics B, 2023, 32(11):110305.

4. Xin-Xin Yang,Liang-Liang Guo, Hai-Feng Zhang, Lei Du, Chi Zhang, Hao-Ran Tao, Yong Chen, Peng Duan, Zhi-Long Jia, Wei-Cheng Kong.Guo-Ping Guo*.Experimental Implementation of Short-Path Nonadiabatic Geometric Gates in a Superconducting Circuit. Physical Review Applied, 2023, 19(4):044076.

2022

1. Yong Chen, Peng Duan, Zhi-Long Jia, Xin-Xin Yang, Chi Zhang, Wei-Cheng Kong, Hai-Ou Li, Gang Cao, Guo-Ping Guo*. Fast Microwave Calibration System for Cryogenic Device Characterization. Journal of Instrumentation, 2022, 17(11):P11021.

2021

1. Peng Duan,Zhi-Long Jia, Chi Zhang, Lei Du, Hao-Ran Tao, Xin-Xin Yang, Liang-Liang Guo, Yong Chen, Hai-Feng Zhang, Zhi-Hao Peng, Wei-Cheng Kong, Hai-Ou Li, Gang Cao.Guo-Ping Guo*. Broadband Flux-Pumped Josephson Parametric Amplifier with an on-Chip Coplanar Waveguide Impedance Transformer. Applied Physics Express, 2021, 14(4):042011.

2. Peng Duan#, Zi-Feng Chen#, Qi Zhou, Wei-Cheng Kong, Hai-Feng Zhang, Guo-Ping Guo. Mitigating Crosstalk-Induced Qubit Readout Error with Shallow-Neural-Network Discrimination. Physical Review Applied, 2021, 16(2):024063.