中国物理B ›› 2023, Vol. 32 ›› Issue (8): 80301-080301.doi: 10.1088/1674-1056/acc3f6

• • 上一篇    下一篇

High-fidelity topological quantum state transfersin a cavity-magnon system

Xi-Xi Bao(包茜茜)1, Gang-Feng Guo(郭刚峰)1, Xu Yang(杨煦)1, and Lei Tan(谭磊)1,2,†   

  1. 1. Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou 730000, China;
    2. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • 收稿日期:2022-12-12 修回日期:2023-03-03 接受日期:2023-03-14 发布日期:2023-07-26
  • 通讯作者: Lei Tan E-mail:tanlei@lzu.edu.cn
  • 基金资助:
    This work was supported by the National Natural Science Foundation of China (Grant Nos.11874190, 61835013, and 12047501) and the Supercomputing Center of Lanzhou University.

High-fidelity topological quantum state transfersin a cavity-magnon system

Xi-Xi Bao(包茜茜)1, Gang-Feng Guo(郭刚峰)1, Xu Yang(杨煦)1, and Lei Tan(谭磊)1,2,†   

  1. 1. Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, Lanzhou 730000, China;
    2. Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China
  • Received:2022-12-12 Revised:2023-03-03 Accepted:2023-03-14 Published:2023-07-26
  • Contact: Lei Tan E-mail:tanlei@lzu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (Grant Nos.11874190, 61835013, and 12047501) and the Supercomputing Center of Lanzhou University.

摘要: We propose a scheme for realizing high-fidelity topological state transfer via the topological edge states in a one-dimensional cavity-magnon system. It is found that the cavity-magnon system can be mapped analytically into the generalized Su-Schrieffer-Heeger model with tunable cavity-magnon coupling. It is shown that the edge state can be served as a quantum channel to realize the photonic and magnonic state transfers by adjusting the coupling strength between adjacent cavity modes. Further, our scheme can realize the quantum state transfer between photonic state and magnonic state by changing the cavity-magnon coupling strength. With the numerical simulation, we quantitatively show that the photonic, magnonic and magnon-to-photon state transfers can be achieved with high fidelity in the cavity-magnon system. Spectacularly, three different types of quantum state transfer schemes can be even transformed into each other in a controllable fashion. The Su-Schrieffer-Heeger model based on the cavity-magnon system provides us a tunable platform to engineer the transport of photon and magnon, which may have potential applications in topological quantum processing.

关键词: topological state transfer, cavity-magnon system, high fidelity

Abstract: We propose a scheme for realizing high-fidelity topological state transfer via the topological edge states in a one-dimensional cavity-magnon system. It is found that the cavity-magnon system can be mapped analytically into the generalized Su-Schrieffer-Heeger model with tunable cavity-magnon coupling. It is shown that the edge state can be served as a quantum channel to realize the photonic and magnonic state transfers by adjusting the coupling strength between adjacent cavity modes. Further, our scheme can realize the quantum state transfer between photonic state and magnonic state by changing the cavity-magnon coupling strength. With the numerical simulation, we quantitatively show that the photonic, magnonic and magnon-to-photon state transfers can be achieved with high fidelity in the cavity-magnon system. Spectacularly, three different types of quantum state transfer schemes can be even transformed into each other in a controllable fashion. The Su-Schrieffer-Heeger model based on the cavity-magnon system provides us a tunable platform to engineer the transport of photon and magnon, which may have potential applications in topological quantum processing.

Key words: topological state transfer, cavity-magnon system, high fidelity

中图分类号:  (Phases: geometric; dynamic or topological)

  • 03.65.Vf
03.67.-a (Quantum information) 05.60.Gg (Quantum transport)