Four wave-mixing in a microstrip kinetic inductance travelling wave parametric amplifier

被引：17
|
作者：
Goldstein, Samuel [1 ]
Kirsh, Naftali [1 ]
Svetitsky, Elisha [1 ]
Zamir, Yuval [1 ]
Hachmo, Ori [1 ]
de Oliveira, Clovis Eduardo Mazzotti [2 ]
Katz, Nadav [1 ]
机构：
[1] Hebrew Univ Jerusalem, Racah Inst Phys, Givat Ram Campus, Jerusalem 9190401, Israel
[2] Hebrew Univ Jerusalem, Harvey M Krueger Family Ctr Nanosci & Nanotechnol, Givat Ram Campus, Jerusalem 9190401, Israel
来源：
APPLIED PHYSICS LETTERS | 2020年 / 116卷 / 15期
关键词：
BAND;
D O I：
10.1063/5.0004236
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Superconducting quantum circuits are typically operated at low temperatures (mK), necessitating cryogenic low-noise, wideband amplifiers for signal readout ultimately also compatible with room temperature electronics. While existing implementations partly meet these criteria, they suffer from certain limitations, such as rippled transmission spectra or limited dynamic range, some of which are caused by the lack of proper impedance matching. We develop a microstrip kinetic inductance traveling wave amplifier, exploiting the nonlinear kinetic inductance of tungsten-silicide for wave-mixing of the signal and a pump, and engineer the impedance to 50 Omega, while decreasing the phase velocity, with benefit for the amplification. Despite losses, pumping on our device amplifies the signal by 15dB over a 2GHz bandwidth.
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页数：4
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