MEMS Measurement of Position-Depenent Phonon Collection in KIPMs

ORAL

Abstract

We employ a micro-electro-mechanical system (MEMS) mirror-based calibration system to probe open questions about kinetic inductance phonon-mediated (KIPM) detectors. These KIPM devices are superconducting resonators sensitive to phonons generated in the substrate. Similar aluminum KIPM devices have shown O(10eV) baseline sensitivity to the energy absorbed into the KIPM, but were found to have phonon collection efficiency below one percent. The low phonon collection efficiency limits the overall detector sensitivity. Using the MEMS-based calibration system to steer an LED onto different locations of the detector substrate, we investigate the underlying spatial dependence of the phonon collection efficiency in KIPMs. This approach can be used to understand phonon collection in various superconducting systems including superconducting qubits and dark matter detectors.

*This work is supported by the U.S. Government under ARO grant W911NF-22-1-0257 as well as the HEPCAT program funded by the Department of Energy award DE-SC0022313.

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Presenters

  • Zoe J Smith

    • Stanford University; SLAC National Accelerator Laboratory; Kavli Institute for Particle Astrophysics & Cosmology
    • Stanford University

Authors

  • Zoe J Smith

    • Stanford University; SLAC National Accelerator Laboratory; Kavli Institute for Particle Astrophysics & Cosmology
    • Stanford University

  • Taylor Aralis

    • SLAC National Accelerator Laboratory

  • Sunil R Golwala

    • Caltech

  • Shawn Wesley Henderson

    • SLAC National Accelerator Laboratory

  • Noah A Kurinsky

    • SLAC National Accelerator Laboratory; Kavli Institute for Particle Astrophysics & Cosmology

  • Kiichi Okubo

    • Syracuse University

  • Elizabeth Panner

    • Tufts University

  • Britton L Plourde

    • University of Wisconsin-Madison
    • University of Wisconsin - Madison

  • Brandon J Sandoval

    • Caltech

  • Kelly Stifter

    • SLAC National Accelerator Laboratory

  • Noshin Tabassum

    • SLAC National Accelerator Laboratory

  • Dylan J Temples

    • Fermilab

  • Osmond Wen

    • Caltech

  • Betty Young

    • Santa Clara University