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EPJ Quantum Technology
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Table 2 Measured RF parameters of the different prototype cavities at room temperature

From: Niobium quarter-wave resonator with the optimized shape for quantum information systems

MaterialCuNbNbNb
ShapeOptimizedSimpleOptimized∗Optimized†
Resonant frequency \(f_{0}\), MHz6001601561605851
Internal Q-factor26318855501084
  1. ∗First prototype.
  2. †Second prototype.
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