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Machine Learning Assisted Superconducting Qubit Readout – Part I: From Pulse Shaping to State Discrimination

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Abstract

Qubit-state readout is a significant error source in contemporary superconducting quantum processors. The fidelity of dispersive qubit-state readout depends on the readout pulse shape and resulting phase-shifted readout signal discriminator. For a single qubit, fast and high-fidelity readout is achieved with minor changes to the rising and falling edge of a rectangular pulse, and a linear matched filter discriminator. However, in resource-efficient, frequency-multiplexed readout of multiple qubits, optimizing the readout pulse shape and discriminator becomes a computationally intensive task. Here, we experimentally demonstrate deep machine learning techniques to improve superconducting qubit readout pulse shapes and discrimination compared to conventional methods.

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Presenters

  • Benjamin Lienhard

    Massachusetts Institute of Technology MIT, Department of Electrical Engineering & Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology

Authors

  • Benjamin Lienhard

    Massachusetts Institute of Technology MIT, Department of Electrical Engineering & Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology

  • Cole Hoffer

    Massachusetts Institute of Technology MIT

  • Antti Vepsäläinen

    MIT Research Laboratory of Electronics, Massachusetts Institute of Technology, Massachusetts Institute of Technology MIT, Research Laboratory of Electronics, Massachusetts Institute of Technology, Aalto University, Department of Electrical Engineering & Computer Science, Massachusetts Institute of Technology

  • Luke Govia

    Raytheon BBN Technologies, BBN Technology - Massachusetts, BBN Technologies

  • Yanjie Qiu

    Massachusetts Institute of Technology MIT

  • David K Kim

    MIT Lincoln Lab, MIT Lincoln Laboratory, Lincoln Laboratory, MIT, MIT - Lincoln Laboratory, Massachusetts Institute of Technology MIT

  • Roni Winik

    MIT Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT

  • Alexander Melville

    MIT Lincoln Lab, MIT Lincoln Laboratory, Lincoln Laboratory, MIT, MIT - Lincoln Laboratory

  • Bethany Niedzielski

    MIT Lincoln Laboratory, MIT Lincoln Lab, Lincoln Laboratory, MIT, MIT - Lincoln Laboratory, Massachusetts Institute of Technology MIT

  • Jonilyn Yoder

    MIT Lincoln Laboratory, MIT Lincoln Lab, Research Laboratory of Electronics, Massachusetts Institute of Technology, Lincoln Laboratory, MIT, MIT - Lincoln Laboratory, Massachusetts Institute of Technology MIT

  • Thomas A Ohki

    Raytheon BBN Technologies, BBN Technology - Massachusetts, BBN Technologies

  • Hari Krovi

    Raytheon BBN Technologies

  • Terry Philip Orlando

    Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT, Research Laboratory of Electronics and Department of Electrical Engineering & Computer Science, Massachusetts Institute of Technology, Department of Electrical Engineering & Computer Science, Research Laboratory of Electronics, Massachusetts Institute of Technology

  • Simon Gustavsson

    Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT Research Laboratory of Electronics, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, MIT

  • William Oliver

    MIT Lincoln Laboratory, Research Laboratory of Electronics, Massachusetts Institute of Technology, Research Laboratory of Electronics, MIT Lincoln Laboratory, Department of Electrical Engineering and Computer Science, MIT Research Laboratory of Electronics, MIT Lincoln Laboratory, MIT Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology MIT, Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Research Laboratory of Electronics, Massachusetts Institute of Technology, MIT Lincoln Laboratory, MIT, MIT, MIT Lincoln Lab, MIT Lincoln Lab, MIT Lincoln Lab, Massachusetts Institute of Technology, Research Laboratory of Electronics, Department of Electrical Engineering and Computer Science, and Department of Physics, Massachusetts Institute of Technology. MIT Lincoln L, Department of Physics, Department of Electrical Engineering & Computer Science, Research Laboratory of Electronics, MIT Lincoln Laboratory, Massachusetts Institute of Technol, Lincoln Laboratory, Research Laboratory of Electronics, and Department of Electrical Engineering & Computer Science, MIT