A low-noise series-array Josephson junction parametric amplifier

被引：47

作者：

Yurke, B

Roukes, ML

Movshovich, R

Pargellis, AN

机构：

[1] Bell Laboratories, Lucent Technologies, Murray Hill

[2] Condensed Matter Physics, Caltech, 114-36, Pasadena

[3] Los Alamos National Laboratory, MST-10, Los Alamos

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 20期

关键词：

D O I：

10.1063/1.116845

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have obtained parametric gain at 19 GHz from a distributed Josephson junction parametric amplifier whose active gain medium consists of a series array of 1000 Josephson junctions embedded in a coplanar waveguide. When cooled to 1.7 K the amplifier provides 16 dB gain in a mode where the internally generated double sideband noise referred to input is 0.5+/-0.1 K. This noise is consistent with Nyquist noise generated from the losses. An instantaneous bandwidth of 125 MHz has been observed with a peak gain of 12 dB. The 3 dB compression point with a peak gain of 14.6 dB is -90.5 dB and the dynamic range is 38 dB. (C) 1996 American Institute of Physics.

引用

页码：3078 / 3080

页数：3

共 15 条

[1] THEORIES OF THE NOISE RISE IN JOSEPHSON PARAMPS [J].