用于多路复用超导量子比特读出的高抑制比、宽带宽四级珀塞尔滤波器

IF 2.7 3区 物理与天体物理 Q2 PHYSICS, APPLIED Journal of Applied Physics Pub Date : 2024-01-08 DOI:10.1063/5.0173539
Yibiao Zhou, Xiao Cai, Yuzhen Zheng, Boyi Zhou, Yu Wang, Kanglin Xiong, Jiagui Feng
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引用次数: 0

摘要

抑制电磁辐射、提高量子比特读出效率的珀塞尔滤波器是超导量子芯片中不可或缺的部件。随着量子芯片规模的不断扩大,对 Purcell 滤波器的性能和可扩展性的要求也越来越严格。本报告介绍了一种新型四级珀塞尔滤波器,它能在不加剧量子比特环境阻尼的情况下实现快速测量。滤波器的设计方法源自 λ/4 谐振腔的串联和并联配置。该滤波器具有出色的通带到频带隔离度,在 400 MHz 的过渡范围内隔离度高达 40 dB。此外,该滤波器的止带和通带都很宽,止带范围为 4 至 5.5 GHz,通带范围为 5.8 至 6.5 GHz。在空间布局方面,每个滤波器可连接十多个读出谐振器,用于量子比特读出。这种创新型 Purcell 滤波器将为开发高质量、可扩展的超导量子芯片做出重大贡献。
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High-suppression-ratio and wide bandwidth four-stage Purcell filter for multiplexed superconducting qubit readout
Purcell filters, which serve to suppress electromagnetic radiation and enhance the readout efficiency of qubit, are an indispensable component in superconducting quantum chips. With the increasing scale of quantum chips, the requirements for the performance and scalability of Purcell filters are becoming more stringent. In this report, a novel four-stage Purcell filter that enables fast measurement without exacerbating environmental damping of the qubits is presented. The design approach of the filter is derived from the serial and parallel configurations of λ/4 resonant cavities. The filter exhibits exceptional passband-to-stopband isolation, reaching up to 40 dB of isolation within the transition range of 400 MHz. Furthermore, the filter boasts a wide bandwidth for both the stopband and the passband, with the stopband ranging from 4 to 5.5 GHz and the passband extending from 5.8 to 6.5 GHz. In terms of spatial arrangement, each filter can be connected to over ten readout resonators for qubit readout. This innovative Purcell filter will significantly contribute to the development of high quality, scalable superconducting quantum chips.
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来源期刊
Journal of Applied Physics
Journal of Applied Physics 物理-物理:应用
CiteScore
5.40
自引率
9.40%
发文量
1534
审稿时长
2.3 months
期刊介绍: The Journal of Applied Physics (JAP) is an influential international journal publishing significant new experimental and theoretical results of applied physics research. Topics covered in JAP are diverse and reflect the most current applied physics research, including: Dielectrics, ferroelectrics, and multiferroics- Electrical discharges, plasmas, and plasma-surface interactions- Emerging, interdisciplinary, and other fields of applied physics- Magnetism, spintronics, and superconductivity- Organic-Inorganic systems, including organic electronics- Photonics, plasmonics, photovoltaics, lasers, optical materials, and phenomena- Physics of devices and sensors- Physics of materials, including electrical, thermal, mechanical and other properties- Physics of matter under extreme conditions- Physics of nanoscale and low-dimensional systems, including atomic and quantum phenomena- Physics of semiconductors- Soft matter, fluids, and biophysics- Thin films, interfaces, and surfaces
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