Widely tunable parametric amplifier based on a superconducting quantum interference device array resonator

被引：310

作者：

Castellanos-Beltrana, M. A. ^{[1
]}

Lehnert, K. W.

机构：

[1] Natl Inst Stand & Technol, Joint Inst Lab Astrophys, Boulder, CO 80309 USA

[2] Univ Colorado, Dept Phys, Boulder, CO 80309 USA

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 08期

关键词：

D O I：

10.1063/1.2773988

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors create a Josephson parametric amplifier from a transmission line resonator whose inner conductor is made from a series of superconducting quantum interference device (SQUID) array. By changing the magnetic flux through the SQUID loops, they are able to adjust the circuit's resonance frequency and the center of the amplified band between 4 and 7.8 GHz. They observe that the amplifier has gains as large as 28 dB and infers that it adds less than twice the input vacuum noise. (C) 2007 American Institute of Physics.

引用

页数：3

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