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个人简介
Research Interests:
My research focuses on superconducting qubit and mesoscopic investigation of transport phenomena in quantum systems for quantum computing.
Current Research Projects:
Currently available superconducting architectures feature a layout in one dimension or in a “heavy-square” lattice, where each qubit has independent XY and Z control lines for gate operation and frequency tunability. Based on these chip architectures, quantum supremacy has been experimentally demonstrated and surface code error correction has also been proposed. However, any dysfunctional qubits in the lattice will cause breakpoints in the superconducting networks. In particular, as superconducting quantum processors have been made towards more complex networks of qubits, it becomes increasingly crucial to develop a robust superconducting architecture and reduce the resource consumption for qubit control. Existing theoretical proposals and experimental demonstrations of geometric quantum computing rely on the higher excited levels of the circuit and/or the frequency adjustability of the qubit transitions, both of which lead to severe decoherence. As such, it remains desired for a feasible scheme for geometric phase gate using microwave-only control on fixed-frequency qubits.
We will address these challenges by achieving the key research objectives: (1) we will develop a new scalable superconducting architecture approach, which is feasible for hybrid surface code. This unique architecture can significantly reduce the resource consumption by individual qubit and efficiently avoid breakpoints of superconducting networks, thus improving the robustness of inter-connections of qubits with the coupling in a well controllable manner. (2) We will realize a new nonadiabatic multi-qubit geometric phase gate scheme, through segmented microwave drive on multiple qubits coupled off-resonantly to a common resonator, with a high gate fidelity owing to the robustness against certain control errors and decoherence. (3) With exploiting the robust superconducting architecture and geometric gate scheme, we will conduct large scale quantum simulation with many-body interactions.
My research focuses on superconducting qubit and mesoscopic investigation of transport phenomena in quantum systems for quantum computing.
Current Research Projects:
Currently available superconducting architectures feature a layout in one dimension or in a “heavy-square” lattice, where each qubit has independent XY and Z control lines for gate operation and frequency tunability. Based on these chip architectures, quantum supremacy has been experimentally demonstrated and surface code error correction has also been proposed. However, any dysfunctional qubits in the lattice will cause breakpoints in the superconducting networks. In particular, as superconducting quantum processors have been made towards more complex networks of qubits, it becomes increasingly crucial to develop a robust superconducting architecture and reduce the resource consumption for qubit control. Existing theoretical proposals and experimental demonstrations of geometric quantum computing rely on the higher excited levels of the circuit and/or the frequency adjustability of the qubit transitions, both of which lead to severe decoherence. As such, it remains desired for a feasible scheme for geometric phase gate using microwave-only control on fixed-frequency qubits.
We will address these challenges by achieving the key research objectives: (1) we will develop a new scalable superconducting architecture approach, which is feasible for hybrid surface code. This unique architecture can significantly reduce the resource consumption by individual qubit and efficiently avoid breakpoints of superconducting networks, thus improving the robustness of inter-connections of qubits with the coupling in a well controllable manner. (2) We will realize a new nonadiabatic multi-qubit geometric phase gate scheme, through segmented microwave drive on multiple qubits coupled off-resonantly to a common resonator, with a high gate fidelity owing to the robustness against certain control errors and decoherence. (3) With exploiting the robust superconducting architecture and geometric gate scheme, we will conduct large scale quantum simulation with many-body interactions.
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Zenghui Bao, Yan Li, Zhiling Wang,Jiahui Wang, Jize Yang, Haonan Xiong,Yipu Song, Yukai Wu, Hongyi Zhang,Luming Duan
Nature communicationsno. 1 (2024): 5958-5958
Physical Review Appliedno. 4 (2024)
Nature Physicspp.1-5, (2024)
Xiaoxuan Pan,Zhide Lu,Weiting Wang,Ziyue Hua,Yifang Xu,Weikang Li,Weizhou Cai, Xuegang Li, Haiyan Wang,Yi-Pu Song,Chang-Ling Zou,Dong-Ling Deng,
Nature Communicationsno. 1 (2023): 1-7
Weizhou Cai,Xianghao Mu,Weiting Wang, Jie Zhou,Yuwei Ma,Xiaoxuan Pan,Ziyue Hua, Xinyu Liu,Guangming Xue,Haifeng Yu,Haiyan Wang,Yipu Song,
arXiv (Cornell University) (2023)
Chipno. 3 (2023): 100063-100063
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