Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session J07: Superconducting Qubits: Josephson Junction-based Amplifiers and Parametric Devices I
2:30 PM–5:30 PM,
Tuesday, March 3, 2020
Sponsoring Unit: DQI
Chair: Archana Kamal
Abstract: J07.00005 : Impedance-matched Josephson parametric amplifier using open stubs as shunt capacitance*
View Presentation Abstract
(National Institute of Advanced Industrial Science and Technology)
(Shanghai Institute of Microsystem and Information Technology)
In this presentation, we show that open stubs (open-circuited transmission lines connected at one end) can be used as shunt capacitances for JPA resonators. Such distributed elements are implemented by planar structures and thus have advantages over parallel-plate capacitors in terms of fabrication simplicity and dielectric loss. Using the open-stub structure, we experimentally demonstrate a broadband flux-driven JPA device based on impedance-matching technique, which operates at around 10 GHz with an instantaneous bandwidth of 300 MHz and saturation input power of -110 dBm.
*This work was supported in part by JSPS KAKENHI (JP18J00874), NEDO, JST ERATO (JPMJER1601), and MEXT Q-LEAP (JPMXS0118068682).
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700