Improved resonator measurement using 1-port cryogenic calibration
ORAL
Abstract
Loss measurements are critical for the superconducting qubit community as the coherence of quantum systems are limited by loss through energy relaxation. Due to geometry limitations, many 3D cavities as well as quantum limited amplifiers, are measured in reflection. However, there’s no known method to correct errors caused by impedance mismatch in Qi extraction for reflection mode. Thus, a calibration down to the device under test is necessary to improve measurement accuracy. In this talk, we will briefly discuss why we need calibration for reflection measurement and then show the difference of before and after applying the 1-port databased SOL calibration introduced in the earlier talk in experiment of measuring both 3D and 2D over-coupled resonators.
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Presenters
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Haozhi Wang
University of Colorado Boulder, University of Colorado, Boulder, National Institute of Standards and Technology, Boulder
Authors
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Haozhi Wang
University of Colorado Boulder, University of Colorado, Boulder, National Institute of Standards and Technology, Boulder
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Suren Singh
Keysight Technologies, Inc., Keysight
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Corey Rae H McRae
University of Colorado, Boulder, University of Colorado Boulder, National Institute of Standards and Technology, Boulder, Physics, University of Colorado Boulder
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Joseph Bardin
Google Quantum AI
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Josh Y Mutus
Google Quantum AI
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David Pappas
NIST, National Institute of Standards and Technology, National Institute of Standards and Technology, Boulder, National Institute of Standards and Technology Boulder