Galvanically connected tunable coupler between a cavity and a waveguide

Kazuki Koshino

doi:10.1088/1367-2630/adc1fb

2025-03-31

Kazuki Koshino *

DOI：10.1088/1367-2630/adc1fb

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摘要

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近期量子设备中的关键技术之一是量子元件（如量子比特、腔体和波导）之间的可调耦合。在本工作中，我们提出了一种基于配备有可调谐短截线的半无限波导实现的腔-波导可调耦合器。本设备的原理是短截线端可调谐边界条件引起的腔体模式节点位置的移动，其优势在于腔-波导耦合具有极宽的可调谐范围。当节点位置被调整至波导的分支点时，腔体模式在原理上与波导模式解耦。同时，由于电导连接，本设备能够轻易实现超强的腔-波导耦合，其中腔体衰减率达到吉赫兹量级，可与腔体共振频率相比拟。

Keyword:

tunable coupler

waveguide QED

circuit QED

superconducting device

stub filter

期刊

New Journal of Physics

IF:

2.8

论文数:

584

被引数:

3.5W

机构

暂无机构信息

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