Quasiparticle dynamics in Andreev bound states part 2: photon interactions

ORAL

Abstract

We measure the dynamics of quasiparticles trapped in the Andreev Bound States (ABS) of a fully superconducting aluminum nanobridge Josephson junction under the influence of microwave drive tones. We observe enhanced excitation of quasiparticles when the junction is driven and observe both expected and anomalous dependence on the drive power. We analyze our results in the context of a junction with multiple ABS and find evidence for inter-ABS transitions.

*This work was funded by the AFOSR YIP under Grant No. FA9550-191-0060 and by the NSF DMR under Grant No. DMR-1900135.

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Presenters

  • Sadman A Shanto

    • University of Southern California

Authors

  • Sadman A Shanto

    • University of Southern California

  • James T Farmer

    • University of Southern California

  • Azarin Zarassi

    • University of Southern California

  • Andre Kuo

    • University of Southern California

  • Leonid Glazman

    • Yale University

  • Eli Levenson-Falk

    • Univ of Southern California