A three-dimensional Josephson parametric amplifier

被引：5

作者：

Mahboob, Imran ^{[1
]}

Toida, Hiraku ^{[1
]}

Kakuyanagi, Kousuke ^{[1
]}

Nakamura, Yasunobu ^{[2
,3
]}

Saito, Shiro ^{[1
]}

机构：

[1] NTT Corp, INTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan

[2] Univ Tokyo, Res Ctr Adv Sci & Technol, Meguro Ku, Tokyo 1538904, Japan

[3] RIKEN, Ctr Emergent Matter Sci, Wako, Saitama 3510198, Japan

来源：

APPLIED PHYSICS EXPRESS | 2022年 / 15卷 / 06期

关键词：

superconducting circuit; 3D cavity; quantum limited amplifier; SQUID; SINGLE-PHOTON; QUANTUM; NOISE; AMPLIFICATION;

D O I：

10.35848/1882-0786/ac702d

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A Josephson parametric amplifier (JPA) is executed in a three-dimensional (3D) microwave cavity by coupling it to a superconducting quantum interference device (SQUID) that is embedded in a two-dimensional resonator. The JPA is activated in a three-wave mixing configuration by injecting ac magnetic flux, at twice the 3D cavity frequency, into the SQUID. An 8.3 GHz cavity is measured in a non-degenerate phase-insensitive configuration which yields gains in excess of 40 dB, where a 20 dB gain results in an operational bandwidth of 0.4 MHz, a 1 dB compression point of -115 dBm with half a quantum of added noise.

引用

页数：5

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