skip to main content

Title: Fabrication and characterization of aluminum airbridges for superconducting microwave circuits

Superconducting microwave circuits based on coplanar waveguides (CPW) are susceptible to parasitic slotline modes which can lead to loss and decoherence. We motivate the use of superconducting airbridges as a reliable method for preventing the propagation of these modes. We describe the fabrication of these airbridges on superconducting resonators, which we use to measure the loss due to placing airbridges over CPW lines. We find that the additional loss at single photon levels is small, and decreases at higher drive powers.
Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ; ;  [1] ;  [1] ;  [2] ; ;  [1] more »;  [2] « less
  1. Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
22283279
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM; FABRICATION; MICROWAVE RADIATION; PHOTONS; SUPERCONDUCTING CAVITY RESONATORS; SUPERCONDUCTIVITY; SUPERCONDUCTORS; WAVEGUIDES