Wideband Josephson Parametric Amplifier with Integrated Transmission Line Transformer

被引：2
|
作者：
Ranzani, Leonardo [1 ]
Ribeill, Guilhem [1 ]
Hassick, Brian [1 ]
Fong, Kin Chung [1 ]
机构：
[1] Raytheon BBN, Quantum Engn & Comp, Cambridge, MA 02138 USA
来源：
2022 IEEE INTERNATIONAL CONFERENCE ON QUANTUM COMPUTING AND ENGINEERING (QCE 2022) | 2022年
基金：
美国国家科学基金会;
关键词：
Parametric amplifiers; superconducting microwave devices; Josephson junctions; impedance transformers;
D O I：
10.1109/QCE53715.2022.00052
中图分类号：
TP301 [理论、方法];
学科分类号：
081202 ;
摘要：
We describe a wide-band Josephson Parametric Amplifier (JPA) that is impedance-matched using an integrated compact superconducting transmission line transformer. The impedance transformer consists of two broadside coupled transmission lines configured in a Ruthroff topology which enables a wide matching bandwidth from 2 to 18 GHz, reducing the input line impedance and the device resonance quality factor by a factor of 4. This enables gain flatness and flexibility in the choice of the amplifier's tuning range. The amplifier has up to 20dB gain, with less than 1 dB of ripple, 2-3 GHz gain-bandwidth product and -126 dBm input 1-dB compression point. Moreover, the device active area fits into a 1 mm x 1 mm space, thus easing integration into large quantum systems.
引用
收藏
页码：314 / 319
页数：6
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