Fluctuations From Edge Defects in Superconducting Resonators

C. Neill; A. Megrant; R. Barends; Yu Chen; B. Chiaro; J. Kelly; J. Y. Mutus; P. J. J. O'Malley; D. Sank; J. Wenner; T. C. White; Yi Yin; A. N. Cleland; John M. Martinis

doi:10.1063/1.4818710

Fluctuations From Edge Defects in Superconducting Resonators

Mesoscale and Nanoscale Physics 2013-09-02 v1

Authors: C. Neill , A. Megrant , R. Barends , Yu Chen , B. Chiaro , J. Kelly , J. Y. Mutus , P. J. J. O'Malley , D. Sank , J. Wenner , T. C. White , Yi Yin , A. N. Cleland , John M. Martinis

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Abstract

Superconducting resonators, used in astronomy and quantum computation, couple strongly to microscopic two-level defects. We monitor the microwave response of superconducting resonators and observe fluctuations in dissipation and resonance frequency. We present a unified model where the observed dissipative and dispersive effects can be explained as originating from a bath of fluctuating two-level systems. From these measurements, we quantify the number and distribution of the defects.

Keywords

quantum fluctuations microwave resonators wave scattering in disordered media

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@article{arxiv.1306.3718,
  title  = {Fluctuations From Edge Defects in Superconducting Resonators},
  author = {C. Neill and A. Megrant and R. Barends and Yu Chen and B. Chiaro and J. Kelly and J. Y. Mutus and P. J. J. O'Malley and D. Sank and J. Wenner and T. C. White and Yi Yin and A. N. Cleland and John M. Martinis},
  journal= {arXiv preprint arXiv:1306.3718},
  year   = {2013}
}

Fluctuations From Edge Defects in Superconducting Resonators

Abstract

Keywords

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