| 引用本文： |
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何昊冉,袁本政,刘福东,王立新,王卫龙,单征.四分之一超导谐振腔的仿真对比[J].低温物理学报,2022,(6):409-417. [点击复制]
- HE Haoran,YUAN Benzheng,LIU Fudong,WANG Lixin,WANG Weilong,SHAN Zheng.Simulation Comparison of Quarter-Wavelength Superconducting Resonators[J].LOW TEMPERATURE PHYSICAL LETTERS,2022,(6):409-417. [点击复制]
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| 摘要: |
| 超导量子电路已成为实现量子计算机的主流技术路线之一, 其中四分之一波长超导谐振腔主要用于读取量子比特的状态信息, 是实现超导量子电路的关键器件. 本文设计了四分之一波长超导谐振腔, 利用两种电磁仿真算法(有限元法以及矩量法) , 对超导谐振腔的传输特性进行建模仿真验证. 制备出了设计的超导谐振腔样品, 在20±5 mK 的低温环境下对其传输特性进行测量. 通过仿真结果与设计值和实测值进行对比研究, 发现基于矩量法的 sonnet 软件在仿真准确性、 仿真速率以及资源消耗等方面都优于基于有限元法的 HFSS 软件. 同时研究了谐振腔之间的串扰对仿真精度的影响, 当谐振腔数目不多时, 其相互之间串扰的影响几乎可以忽略. |
| 关键词: 共面波导谐振腔, 超导量子比特, 有限元法, 串扰 |
| DOI： |
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| Simulation Comparison of Quarter-Wavelength Superconducting Resonators |
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HE Haoran, YUAN Benzheng, LIU Fudong, WANG Lixin, WANG Weilong, SHAN Zheng
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| (State Key Laboratory of Mathematical Engineering and Advanced Computing , Zhengzhou 450001) |
| Abstract: |
| Superconducting quantum circuits have become one of the mainstream technical routes to realize quantum computers, where quarter-wavelength superconducting resonators are mainly used to readout the information of qubit state and are the key devices for realizing superconducting quantum circuits. In this work, a quarter-wavelength superconducting resonator is designed. Two electromagnetic simulation algorithms (finite element method and moment method) are used to model and simulate the transmission characteristics of the superconducting resonator. The designed superconducting resonator sample was prepared and its transmission characteristics were measured at a low temperature of 20 ±5 mK. By comparing the simulation results with the design values and measured values, it is found that the sonnet software based on the method of moments is superior to the HFSS software based on the finite element method in terms of simulation accuracy, simulation speed and resource consumption. At the same lime, the influence of crosstalk between resonators on simulation accuracy is studied. When the number of resonators is small， the influence of crosstalk between resonators can be almost ignored. |
| Key words: Superconducting resonators, Simulation, Electromagnetic simulation algorithms, Crosstalk |
