中国物理B ›› 2024, Vol. 33 ›› Issue (9): 90304-090304.doi: 10.1088/1674-1056/ad6253

所属专题: SPECIAL TOPIC — Quantum computing and quantum sensing

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Delayed-measurement one-way quantum computing on cloud quantum computer

Zhi-Peng Yang(杨智鹏)1,2, Yu-Ran Zhang(张煜然)3, Fu-Li Li(李福利)2, and Heng Fan(范桁)4,1,†   

  1. 1 Beijing Academy of Quantum Information Science, Beijing 100193, China;
    2 Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China;
    3 School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China;
    4 Institute of Physics, China Academy of Sciences, Beijing 100190, China
  • 收稿日期:2024-05-30 修回日期:2024-06-26 接受日期:2024-07-12 发布日期:2024-08-30
  • 通讯作者: Heng Fan E-mail:hfan@iphy.ac.cn
  • 基金资助:
    The authors appreciate Franco Nori for the valuable discussions. Project supported by the National Natural Science Foundation of China (Grant Nos. 92265207 and T2121001) and Beijing Natural Science Foundation (Grant No. Z200009).

Delayed-measurement one-way quantum computing on cloud quantum computer

Zhi-Peng Yang(杨智鹏)1,2, Yu-Ran Zhang(张煜然)3, Fu-Li Li(李福利)2, and Heng Fan(范桁)4,1,†   

  1. 1 Beijing Academy of Quantum Information Science, Beijing 100193, China;
    2 Ministry of Education Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Shaanxi Province Key Laboratory of Quantum Information and Quantum Optoelectronic Devices, School of Physics, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China;
    3 School of Physics and Optoelectronics, South China University of Technology, Guangzhou 510640, China;
    4 Institute of Physics, China Academy of Sciences, Beijing 100190, China
  • Received:2024-05-30 Revised:2024-06-26 Accepted:2024-07-12 Published:2024-08-30
  • Contact: Heng Fan E-mail:hfan@iphy.ac.cn
  • Supported by:
    The authors appreciate Franco Nori for the valuable discussions. Project supported by the National Natural Science Foundation of China (Grant Nos. 92265207 and T2121001) and Beijing Natural Science Foundation (Grant No. Z200009).

摘要: One-way quantum computation focuses on initially generating an entangled cluster state followed by a sequence of measurements with classical communication of their individual outcomes. Recently, a delayed-measurement approach has been applied to replace classical communication of individual measurement outcomes. In this work, by considering the delayed-measurement approach, we demonstrate a modified one-way CNOT gate using the on-cloud superconducting quantum computing platform: Quafu. The modified protocol for one-way quantum computing requires only three qubits rather than the four used in the standard protocol. Since this modified cluster state decreases the number of physical qubits required to implement one-way computation, both the scalability and complexity of the computing process are improved. Compared to previous work, this modified one-way CNOT gate is superior to the standard one in both fidelity and resource requirements. We have also numerically compared the behavior of standard and modified methods in large-scale one-way quantum computing. Our results suggest that in a noisy intermediate-scale quantum (NISQ) era, the modified method shows a significant advantage for one-way quantum computation.

关键词: measurement-based quantum computing, quantum entanglement, quantum gates

Abstract: One-way quantum computation focuses on initially generating an entangled cluster state followed by a sequence of measurements with classical communication of their individual outcomes. Recently, a delayed-measurement approach has been applied to replace classical communication of individual measurement outcomes. In this work, by considering the delayed-measurement approach, we demonstrate a modified one-way CNOT gate using the on-cloud superconducting quantum computing platform: Quafu. The modified protocol for one-way quantum computing requires only three qubits rather than the four used in the standard protocol. Since this modified cluster state decreases the number of physical qubits required to implement one-way computation, both the scalability and complexity of the computing process are improved. Compared to previous work, this modified one-way CNOT gate is superior to the standard one in both fidelity and resource requirements. We have also numerically compared the behavior of standard and modified methods in large-scale one-way quantum computing. Our results suggest that in a noisy intermediate-scale quantum (NISQ) era, the modified method shows a significant advantage for one-way quantum computation.

Key words: measurement-based quantum computing, quantum entanglement, quantum gates

中图分类号:  (Entanglement and quantum nonlocality)

  • 03.65.Ud
03.67.-a (Quantum information) 03.67.Ac (Quantum algorithms, protocols, and simulations) 03.67.Lx (Quantum computation architectures and implementations)