Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching

被引：127

作者：

White, T. C. ^{[1
]}

Mutus, J. Y. ^{[1
]}

Hoi, I. -C. ^{[1
]}

Barends, R. ^{[1
]}

Campbell, B. ^{[1
]}

Chen, Yu ^{[1
]}

Chen, Z. ^{[1
]}

Chiaro, B. ^{[1
]}

Dunsworth, A. ^{[1
]}

Jeffrey, E. ^{[1
]}

Kelly, J. ^{[1
]}

Megrant, A. ^{[1
,2
]}

Neill, C. ^{[1
]}

O'Malley, P. J. J. ^{[1
]}

Roushan, P. ^{[1
]}

Sank, D. ^{[1
]}

Vainsencher, A. ^{[1
]}

Wenner, J. ^{[1
]}

Chaudhuri, S. ^{[3
]}

Gao, J. ^{[4
]}

Martinis, John M. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[2] Univ Calif Santa Barbara, Dept Mat, Santa Barbara, CA 93106 USA

[3] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[4] NIST, Boulder, CO 80305 USA

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 24期

关键词：

LOW-NOISE; AMPLIFICATION; BAND; CIRCUITS; ARRAYS;

D O I：

10.1063/1.4922348

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Josephson parametric amplifiers have become a critical tool in superconducting device physics due to their high gain and quantum-limited noise. Traveling wave parametric amplifiers (TWPAs) promise similar noise performance, while allowing for significant increases in both bandwidth and dynamic range. We present a TWPA device based on an LC-ladder transmission line of Josephson junctions and parallel plate capacitors using low-loss amorphous silicon dielectric. Crucially, we have inserted lambda/4 resonators at regular intervals along the transmission line in order to maintain the phase matching condition between pump, signal, and idler and increase gain. We achieve an average gain of 12 dB across a 4 GHz span, along with an average saturation power of -92 dBm with noise approaching the quantum limit. (C) 2015 AIP Publishing LLC.

引用

页数：5

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