Josephson Junctions & TLS Defects

Presentations

• Impact of junction oxidation parameters on the two-level system densities in superconducting qubits

  ORAL

  March 21, 2025, 11:30 AM – March 21, 2025, 11:42 AM

  Presenters

  • Aranya Goswami

    • Massachusetts Institute of Technology

  Authors

  • Aranya Goswami

    • Massachusetts Institute of Technology

  • Hung-Yu Tsao

    • Massachusetts Institute of Technology

  • Chia-Chin Tsai

    • Massachusetts Institute of Technology

  • Andres Esteban Lombo

    • Massachusetts Institute of Technology

  • Kevin Grossklaus

    • MIT Lincoln Laboratories
    • MIT Lincoln Laboratory

  • Joel I-Jan Wang

    • Massachusetts Institute of Technology

  • Kyle Serniak

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology

  • Jeffrey A Grover

    • Massachusetts Institute of Technology

  • Kevin P O'Brien

    • Massachusetts Institute of Technology

  • William D Oliver

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology (MIT)

  View abstract →

• Coherence Measurements of Transmon Qubits with In-Situ Patches

  ORAL

  March 21, 2025, 11:42 AM – March 21, 2025, 11:54 AM

  Presenters

  • Justin M Peterkin

    • University of Maryland College Park

  Authors

  • Justin M Peterkin

    • University of Maryland College Park

  • Haozhi Wang

    • University of Maryland College Park

  • Zachary Steffen

    • University of Maryland College Park

  • Yi-Hsiang Huang

    • University of Maryland College Park

  • Benjamin Palmer

    • Laboratory for Physical Sciences (LPS)

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• A Two-Level System as a Nanoscale Quantum Sensor in a Transmon Qubit

  ORAL

  March 21, 2025, 11:54 AM – March 21, 2025, 12:06 PM

  Presenters

  • Lucia De Rose

    • Caltech

  Authors

  • Lucia De Rose

    • Caltech

  • Mo Chen

    • University of Washington

  • Oskar Painter

    • Caltech
    • Caltech & AWS
    • AWS Center for Quantum Computing

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• Material Defects Manipulation and Mitigation in Superconducting Qubits

  ORAL · Invited

  March 21, 2025, 12:06 PM – March 21, 2025, 12:42 PM

  Presenters

  • Kan-Heng Lee

    • Lawrence Berkeley National Laboratory

  Authors

  • Kan-Heng Lee

    • Lawrence Berkeley National Laboratory

  • Larry Chen

    • University of California, Berkeley

  • Chuan-Hong Liu

    • University of California, Berkeley
    • Univ of California, Berkeley

  • Ziqi (Candice) Kang

    • University of California, Berkeley

  • Noah Kurt Goss

    • University of California, Berkeley

  • Ravi K. Naik

    • Lawrence Berkeley National Laboratory

  • Hyunseong Kim

    • University of California, Berkeley

  • David I Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  View abstract →

• Stencil Mask-Enabled Fabrication for Superconducting Qubits (Part 1)

  ORAL

  March 21, 2025, 12:42 PM – March 21, 2025, 12:54 PM

  Presenters

  • Chia-Chin Tsai

    • Massachusetts Institute of Technology

  Authors

  • Chia-Chin Tsai

    • Massachusetts Institute of Technology

  • Hung-Yu Tsao

    • Massachusetts Institute of Technology

  • Aranya Goswami

    • Massachusetts Institute of Technology

  • Jeffrey A Grover

    • Massachusetts Institute of Technology

  • Kyle Serniak

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology

  • Joel I-Jan Wang

    • Massachusetts Institute of Technology

  • William D Oliver

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology (MIT)

  View abstract →

• Stencil Mask Enabled Fabrication for Superconducting Qubits (Part 2)

  ORAL

  March 21, 2025, 12:54 PM – March 21, 2025, 1:06 PM

  Presenters

  • Hung-Yu Tsao

    • Massachusetts Institute of Technology

  Authors

  • Hung-Yu Tsao

    • Massachusetts Institute of Technology

  • Chia-Chin Tsai

    • Massachusetts Institute of Technology

  • Aranya Goswami

    • Massachusetts Institute of Technology

  • Jeffrey A Grover

    • Massachusetts Institute of Technology

  • Kyle Serniak

    • MIT Lincoln Laboratory
    • Lincoln Laboratory, Massachusetts Institute of Technology

  • Joel I-Jan Wang

    • Massachusetts Institute of Technology

  • William D Oliver

    • Massachusetts Institute of Technology
    • Massachusetts Institute of Technology (MIT)

  View abstract →

• Abstract Withdrawn

  ORAL · Withdrawn

  March 21, 2025, 1:06 PM – March 21, 2025, 1:18 PM

  View abstract →

• Tunneling of Hydrogen and Deuterium in Niobium: Embedded TLSs in Quantum Devices

  ORAL

  March 21, 2025, 1:18 PM – March 21, 2025, 1:30 PM

  Publication: A. Abogoda, W. A. Shelton, I. Vekhter, and J. A. Sauls, Hydrogen and Deuterium Tunneling in Niobium, arXiv:2409.09014.

  Presenters

  • Abdulaziz Abogoda

    • Northwestern University

  Authors

  • Abdulaziz Abogoda

    • Northwestern University

  • J. A Sauls

    • Louisiana State University

  • Ilya Vekhter

    • Louisiana State University

  • William A Shelton

    • Louisiana State University

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• Implications of annealing on the structure and chemistry of Al/AlO_x/Al Josephson junctions

  ORAL

  March 21, 2025, 1:30 PM – March 21, 2025, 1:42 PM

  Presenters

  • Jaeyel Lee

    • Fermilab
    • Fermi National Accelerator Laboratory

  Authors

  • Jaeyel Lee

    • Fermilab
    • Fermi National Accelerator Laboratory

  • Francesco Crisa

    • Fermi National Accelerator Laboratory
    • Fermilab
    • Fermilab, SQMS
    • Fermi National Accelerator Laboratory (Fermilab)

  • Sabrina Garattoni

    • Fermilab
    • Fermi National Accelerator Laboratory (Fermilab)
    • Fermi National Accelerator Laboratory

  • Adam C Clairmont

    • Fermi National Accelerator Laboratory

  • Mustafa Bal

    • Fermi National Accelerator Laboratory
    • Fermi National Accelerator Laboratory (Fermilab)
    • Fermilab

  • Alexander Romanenko

    • Fermi National Accelerator Laboratory
    • Fermi National Accelerator Laboratory (Fermilab)
    • Fermilab

  • Anna Grassellino

    • Fermi National Accelerator Laboratory
    • Fermi National Accelerator Laboratory (Fermilab)
    • Fermilab

  • Akshay Murthy

    • Fermi National Accelerator Laboratory
    • Fermi National Accelerator Laboratory (Fermilab)
    • Fermilab

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• Non-Markovian bath spectroscopy of discrete two-level systems in a fluxonium qubit

  ORAL

  March 21, 2025, 1:42 PM – March 21, 2025, 1:54 PM

  Presenters

  • Zetong Zhuang

    • University of Massachusetts Amherst

  Authors

  • Zetong Zhuang

    • University of Massachusetts Amherst

  • Dario Rosenstock

    • University of Massachusetts Amherst

  • Baojie Liu

    • University of Massachusetts Amherst

  • Aaron Somoroff

    • University of Maryland College Park
    • SEEQC, Inc.

  • Vladimir E Manucharyan

    • University of Maryland College Park; EPFL
    • University of Maryland College Park

  • Chen Wang

    • University of Massachusetts Amherst
    • UNIVERSITY OF MASSACHUSETTS AMHERST

  View abstract →

• Abstract Withdrawn

  ORAL · Withdrawn

  March 21, 2025, 1:54 PM – March 21, 2025, 2:06 PM

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• Purity benchmarking study of error coherence in a superconducting qubit

  ORAL

  March 21, 2025, 2:06 PM – March 21, 2025, 2:18 PM

  Publication: arXiv:2407.07960

  Presenters

  • Auda Zhu

    • University of Waterloo

  Authors

  • Auda Zhu

    • University of Waterloo

  • Jérémy H Béjanin

    • University of Waterloo

  • Xicheng Xu

    • University of Waterloo
    • Institute for Quantum Computing, University of Waterloo, and Red Blue Quantum Inc.

  • Matteo Mariantoni

    • University of Waterloo
    • University of Waterloo & Red Blue Quantum Inc.
    • University of Waterloo - Red Blue Quantum Inc.

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• Time-resolved noise characterization tool to track fluctuating noise effects in superconducting qubits

  ORAL

  March 21, 2025, 2:18 PM – March 21, 2025, 2:30 PM

  Presenters

  • Ivan Rungger

    • National Physical Laboratory (NPL)
    • National Physical Laboratory

  Authors

  • Ivan Rungger

    • National Physical Laboratory (NPL)
    • National Physical Laboratory

  • Abhishek Agarwal

    • National Physical Laboratory (NPL)

  • Lachlan P Lindoy

    • National Physical Laboratory (NPL)

  • Deep Lall

    • National Physical Laboratory (NPL)

  • Tobias Lindstrom

    • National Physical Laboratory (NPL)

  • Sebastian d Graaf

    • National Physical Laboratory
    • National Physical Laboratory (NPL)

  View abstract →