Obstacles to Two-Line Josephson Traveling Wave Parametric Amplifier

被引：0

作者：

Kornev, Victor K. ^{[1
]}

Nikolaeva, Alena N. ^{[1
]}

Kolotinskiy, Nikolay V. ^{[1
]}

机构：

[1] Lomonosov Moscow State Univ, Dept Phys, Moscow 119991, Russia

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2025年 / 35卷 / 02期

基金：

俄罗斯科学基金会;

关键词：

Inductance; Couplings; SQUIDs; Magnetic flux; Josephson junctions; Waveguide transitions; Propagation; Modulation; Junctions; Wave energy conversion; Josephson amplifiers; Josephson devices; Josephson traveling-wave parametric amplifier (JTWPA); parametric devices; traveling wave amplifiers;

D O I：

10.1109/TASC.2025.3526746

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Obstacles to the two-line Josephson traveling wave parametric amplifier (JTWPA) designs, aimed at increasing the allowed pump wave energy and, hence, the gain growth through the combination of linear and nonlinear lines as pump and signal lines is discussed. This analysis takes into account both the mutual coupling and the discreteness of the artificial waveguide lines. Significant restrictions arise from the cyclical transfer of the traveling wave's energy from one line to the other one with phase step by pi every beat cycle. Moreover, the other restrictions result from the phase mismatch between the pump, signal, and idler waves due to both the coupling and the discreteness of the artificial lines.

引用

页数：7

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