Granular aluminium superinductors - Dissertationsschrift

We investigate superconducting granular aluminum (grAl) as a promising material for quantum circuits. We show that grAl strips can reach kinetic inductances up to nH/sq, while maintaining small microwave frequency losses. We identify excess quasiparticles as a limiting loss mechanism, and find quasiparticle relaxation times on the order of seconds. By fabricating a fluxonium quantum bit with a grAl superinductor, we demonstrate that grAl is a viable material for superconducting quantum circuits.

Product details

• Authors: Lukas Grünhaupt
• Publisher: KIT Scientific Publishing
• Languages: English
• Product format: Paperback / Softback
• Released: 29.10.2019
• EAN: 9783731509561
• ISBN: 978-3-7315-0956-1
• No. of pages: 170
• Dimensions: 170 mm x 240 mm x 10 mm
• Weight: 425 g
• Illustrations: graph. Darst.
• Series: Experimental Condensed Matter Physics
• Subject: Natural sciences, medicine, IT, technology > Physics, astronomy > Miscellaneous