Josephson Junctions & TLS Defects

Presentations

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

  ORAL

  March 21, 2025, 2:30 PM – March 21, 2025, 2:42 PM

  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, 2:42 PM – March 21, 2025, 2:54 PM

  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)

  View abstract →

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

  ORAL

  March 21, 2025, 2:54 PM – March 21, 2025, 3:06 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

  View abstract →

• Material Defects Manipulation and Mitigation in Superconducting Qubits

  ORAL · Invited

  March 21, 2025, 3:06 PM – March 21, 2025, 3:42 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, 3:42 PM – March 21, 2025, 3:54 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, 3:54 PM – March 21, 2025, 4:06 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, 4:06 PM – March 21, 2025, 4:18 PM

  View abstract →

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

  ORAL

  March 21, 2025, 4:18 PM – March 21, 2025, 4:30 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

  View abstract →

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

  ORAL

  March 21, 2025, 4:30 PM – March 21, 2025, 4:42 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, 4:42 PM – March 21, 2025, 4:54 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, 4:54 PM – March 21, 2025, 5:06 PM

  View abstract →

• Purity benchmarking study of error coherence in a superconducting qubit

  ORAL

  March 21, 2025, 5:06 PM – March 21, 2025, 5:18 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, 5:18 PM – March 21, 2025, 5:30 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 →