Journal
APPLIED PHYSICS LETTERS
Volume 97, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3458705
Keywords
current density; nanostructured materials; silicon compounds; solar cells; wide band gap semiconductors
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Funding
- Pieter Langerhuizen Lambertuszoon
- Royal Holland Society of Sciences and Humanities
- EU NanoSciERA project Nanofridge.
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We report quality factors of up to 500 x 10(3) in superconducting resonators at the single photon levels needed for circuit quantum electrodynamics. This result is achieved by using NbTiN and removing the dielectric from regions with high electric fields. As demonstrated by a comparison with Ta, the crucial sources of intensity-dependent loss are dielectrics on the surface of the metal and substrate. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3458705]
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