TY - JOUR
T1 - Understanding the Saturation Power of Josephson Parametric Amplifiers Made from SQUID Arrays
AU - Planat, Luca
AU - Dassonneville, Rémy
AU - Martínez, Javier Puertas
AU - Foroughi, Farshad
AU - Buisson, Olivier
AU - Hasch-Guichard, Wiebke
AU - Naud, Cécile
AU - Vijay, R.
AU - Murch, Kater
AU - Roch, Nicolas
N1 - Publisher Copyright:
© 2019 American Physical Society.
PY - 2019/3/6
Y1 - 2019/3/6
N2 - We report on the implementation and detailed modeling of a Josephson parametric amplifier (JPA) made from an array of eighty superconducting quantum interference devices (SQUIDs), forming a nonlinear quarter-wave resonator. This device is fabricated using a very simple single-step fabrication process. It shows a large bandwidth (45 MHz), an operating frequency tunable between 5.9 and 6.8 GHz, and a large input saturation power (-117dBm) when biased to obtain 20 dB of gain. Despite the length of the SQUID array being comparable to the wavelength, we present a model based on an effective nonlinear LC series resonator that quantitatively describes these figures of merit without fitting parameters. Our work illustrates the advantage of using array-based JPA since a single-SQUID device showing the same bandwidth and resonant frequency would display a saturation power 15 dB lower.
AB - We report on the implementation and detailed modeling of a Josephson parametric amplifier (JPA) made from an array of eighty superconducting quantum interference devices (SQUIDs), forming a nonlinear quarter-wave resonator. This device is fabricated using a very simple single-step fabrication process. It shows a large bandwidth (45 MHz), an operating frequency tunable between 5.9 and 6.8 GHz, and a large input saturation power (-117dBm) when biased to obtain 20 dB of gain. Despite the length of the SQUID array being comparable to the wavelength, we present a model based on an effective nonlinear LC series resonator that quantitatively describes these figures of merit without fitting parameters. Our work illustrates the advantage of using array-based JPA since a single-SQUID device showing the same bandwidth and resonant frequency would display a saturation power 15 dB lower.
UR - https://www.scopus.com/pages/publications/85062972396
U2 - 10.1103/PhysRevApplied.11.034014
DO - 10.1103/PhysRevApplied.11.034014
M3 - Article
AN - SCOPUS:85062972396
SN - 2331-7019
VL - 11
JO - Physical Review Applied
JF - Physical Review Applied
IS - 3
M1 - 034014
ER -