Title: Kinetic inductance in superconducting quantum devices
Speaker: Prof. Nadav Katz, Racah Institute of Physics and the 
Quantum Information Science Center of the Hebrew University 
(Director) Jerusalem, Israel

Place: Room 620, Dept of Physics, NTHU

Time: 11AM-12PM, Aug. 19, 2019

Abstract: The kinetic inductance of superconducting devices is now 
recognized as an additional resource for fabricating compact,
nonlinear and quantum microwave circuits. I will introduce our 
method to measure subtle nonlinearity in coupled devices via a pump-
probe spectroscopy. The results include precise measurement of both 
two level defect losses and the kinetic inductance over 8 orders of 
magnitude in drive power. I will also present our traveling wave 
amplifier with novel impedance and nonlinear wave-mixing properties. 
The 4-wave mixing process in this device can be used as a novel 
source of traveling quantum microwave photons, or as an 
amplification of a quantum measurement.