Title: Spatially correlated loss in superconducting resonator arrays via optical illumination

ORAL

Abstract

Superconducting circuits have emerged as a leading platform for quantum computation1, single photon detection2 and quantum sensing3. The performance of these chips depends on their sensitivity to incident radiation, which produces quasiparticles and phonons that propagate throughout the chip4-6. In this talk, we discuss a milliKelvin scanning laser technique, which allows us to spatially and temporally map the response of superconducting circuits. We apply this technique to an array of superconducting resonators. We monitor the frequency shift of the resonators as the beam spot is varied in both location and intensity. As the beam spot is scanned across the chip we find spatial variation in the resonators’ response for high laser powers. Our results present a testbed that will inform future generations of superconducting chips.

*B.H. acknowledges funding from the Institute for Soldier Nanotechnologies. E.A. acknowledges fellowship funding through the Army Educational Outreach Program.

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Publication: [1] A. Blais et al. Rev. Mod. Phys. 93, 025005 (2021)
[2] I. Zadeh et al. Appl. Phys. Lett. 118, 190502 (2021)
[3] C. L. Degen et al. Rev. Mod. Phys. 89, 035002 (2017)
[4] M. McEwen et al. Nat. Phys. 18, 107 (2022)
[5] P. Harrington et al. arXiv:2402.03208
[6] R. Benevides et al. Phys. Rev. Lett. 133, 060602 (2024)

Presenters

  • Bevin Huang

    • Massachusetts Institute of Technology

Authors

  • Bevin Huang

    • Massachusetts Institute of Technology

  • Ethan G Arnault

    • Massachusetts Institute of Technology

  • Xiaoling Liu

    • Harvard University

  • Mikhail D Lukin

    • Harvard University

  • Dirk R Englund

    • Columbia University
    • Massachusetts Institute of Technology
    • MIT

  • Matthew Trusheim

    • Harvard University
    • Army Research Laboratory

  • Kin Chung Fong

    • Raytheon BBN
    • Raytheon BBN Technologies
    • Northeastern University