Superconducting Qubits Underground: Design, Measurement, and Scalability

ORAL

Abstract

Superconducting qubit devices are highly sensitive to cosmic ray induced quasiparticle poisoning—a challenge for quantum computing. At Fermilab, we utilize an underground testbed called QUIET that significantly decreases the rate of such events. We employ an open-source toolchain, including Qiskit Metal and the SQuADDs library, for device design and simulation prior to fabrication. We then test these chips in QUIET, which is capable of housing many chips, enabling tests of scalability. This presentation will cover our qubit design approach, fabrication capabilities, and first measurements from qubits deployed in QUIET, benchmarking the new facility.

*This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. This work was supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Quantum Science Center, and the U.S. Department of Energy, Office of Science, High-Energy Physics Program Office.

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Presenters

  • Olivia Seidel

    • University of Texas at Arlington

Authors

  • Olivia Seidel

    • University of Texas at Arlington

  • Arianna H Colon Cesani

    • Northwestern University

  • Grace Bratrud

    • Northwestern University

  • Israel Hernandez

    • Illinois Institute of Technology
    • illinois institute of technology
    • Illinois Institute Of Technology

  • Sara F Sussman

    • Princeton University

  • Daniel S Baxter

    • Fermi National Accelerator Laboratory (Fermilab)