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| Quasiparticle dynamics in superconducting quantum-classical hybrid circuits | |
| 2023-08-01 | |
| 发表期刊 | PHYSICAL REVIEW B
 |
| ISSN | 2469-9950 |
| EISSN | 2469-9969 |
| 卷号 | 108期号:6 |
| DOI | 10.1103/PhysRevB.108.064512 |
| 摘要 | Single flux quantum (SFQ) circuitry is a promising candidate for a scalable and integratable cryogenic quantum control system. However, the operation of SFQ circuits introduces nonequilibrium quasiparticles (QPs), which are a significant source of qubit decoherence. In this study, we investigate QP behavior in a superconducting quantum-classical hybrid chip that comprises an SFQ circuit and a qubit circuit. By monitoring qubit relaxation time, we explore the dynamics of SFQ-circuit-induced QPs. Our findings reveal that the QP density near the qubit reaches its peak after several microseconds of SFQ circuit operation, which corresponds to the phonon-mediated propagation time of QPs in the hybrid circuits. This suggests that phonon-mediated propagation dominates the spreading of QPs in the hybrid circuits. Our results lay the foundation to suppress QP poisoning in quantum-classical hybrid systems. © 2023 American Physical Society. |
| 关键词 | Electric network analysis Hybrid systems Phonons Timing circuits Hybrid chips Hybrid circuit Non equilibrium Quantum control systems Quantum-classical Quasiparticle dynamics Quasiparticles Qubit decoherence Single flux quantum circuitries Single-flux-quantum circuits |
| URL | 查看原文 |
| 收录类别 | EI |
| 语种 | 英语 |
| 出版者 | American Physical Society |
| EI入藏号 | 20233614664744 |
| EI主题词 | Qubits |
| EI分类号 | 703.1.1 Electric Network Analysis ; 713.4 Pulse Circuits ; 741 Light, Optics and Optical Devices ; 761 Nanotechnology ; 921 Mathematics |
| 原始文献类型 | Journal article (JA) |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/328999 |
| 专题 | 物质科学与技术学院_特聘教授组_王镇组 物质科学与技术学院_特聘教授组_谢晓明组 物质科学与技术学院_博士生 |
| 作者单位 | 1.National Key Laboratory of Materials for Integrated Circuits, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai; 200050, China; 2.CAS Center for Excellence in Superconducting Electronics, 865 Changning Road, Shanghai; 200050, China; 3.University of Chinese Academy of Sciences, Beijing; 100049, China; 4.ShanghaiTech University, Shanghai; 201210, China |
| 推荐引用方式 GB/T 7714 | Liu, Kuang,He, Xiaoliang,Niu, Zhengqi,et al. Quasiparticle dynamics in superconducting quantum-classical hybrid circuits[J]. PHYSICAL REVIEW B,2023,108(6). |
| APA | Liu, Kuang.,He, Xiaoliang.,Niu, Zhengqi.,Xue, Hang.,Jiang, Wenbing.,...&Wang, Zhen.(2023).Quasiparticle dynamics in superconducting quantum-classical hybrid circuits.PHYSICAL REVIEW B,108(6). |
| MLA | Liu, Kuang,et al."Quasiparticle dynamics in superconducting quantum-classical hybrid circuits".PHYSICAL REVIEW B 108.6(2023). |
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