High-throughput qubit measurements for systematic material improvement

ORAL

Abstract

Superconducting qubit coherence remains a bottleneck towards fault-tolerant quantum computation and is affected by many factors, such as circuit design, fabrication, and measurement environment. Isolating contributions of material growth and processing during the qubit fabrication from other factors requires a dedicated chip design and fixed measurement infrastructure. In addition, capturing coherence fluctuations, over time, across a chip, or from chip to chip, requires a setup capable of efficient bring-up and fast high-throughput coherence assessment.

Here, we will discuss a high-throughput measurement setup that is compatible with research laboratories and is geared towards obtaining meaningful statistics for material improvements. We will describe the cryogenic setup designed to measure over 40 qubits per cooldown, the automation and runtime optimization of qubit characterization using an open-source RFSoC-based qubit controller (QICK), and early fabrication results.

*This work was supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Superconducting Quantum Materials and Systems Center (SQMS), under Contract No. 89243024CSC000002.

–

Presenters

  • Anastasia Chernikova

    • University of Colorado Boulder, National Institute of Standards and Technology

Authors

  • Anastasia Chernikova

    • University of Colorado Boulder, National Institute of Standards and Technology

  • Tony McFadden

    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology
    • National Institute of Standards and Technology, Boulder CO 80305
    • National Institute of Standards and Technology, Boulder, Colorado 80305, USA
    • National Institute of Standards and Technology (NIST)
    • University of California, Santa Barbara
    • National Institute of Standards and Technology, Boulder

  • Zachary Parrott

    • University of Colorado Boulder, National Institute of Standards and Technology
    • National Institute of Standards and Technology, Boulder, Colorado 80305, USA
    • University of Colorado, Boulder
    • University of Colorado Boulder
    • University of Colorado Boulder, National Institute of Standards and Technology Boulder
    • NIST, Boulder

  • Trevyn F.Q. F Larson

    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology
    • University of Colorado
    • University of Colorado Boulder, National Institute of Standards and Technology
    • University of Colorado Boulder, National Institute of Standards and Technology Boulder

  • Akash V Dixit

    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology

  • Katarina Cicak

    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology
    • National Institute of Standards and Technology (NIST)

  • Ray W Simmonds

    • National Institute of Standards and Technology, University of Colorado Boulder
    • National Institute of Standards and Technology
    • National Institute of Standards and Technology Boulder
    • The Global Coherence Project

  • Florent Lecocq

    • National Institute of Standards and Technology, University of Colorado Boulder
    • National Institute of Standards and Technology
    • National Institute of Standards and Technology Boulder
    • National Institute of Standards and Technology, Boulder, Colorado 80305, USA
    • National Institute of Standards and Technology Boulder, University of Colorado Boulder