Superconducting Qubits: Loss Studies for Device Improvements

Presentations

• Characterizing Losses of Two-Level Systems in Al₂O₃: Experiment and Results

  ORAL

  March 19, 2025, 11:30 AM – March 19, 2025, 11:42 AM

  Presenters

  • Sara Magdalena Gomez

    • Dartmouth College

  Authors

  • Sara Magdalena Gomez

    • Dartmouth College

  • Qianxu Wang

    • Dartmouth College

  • Jake Freeman

    • Dartmouth College

  • Salil Bedkihal

    • Dartmouth College
    • University of Waterloo

  • Rudy Echavarria

    • Amherst College

  • Roy Leibovitz

    • Dartmouth College

  • Juan Sebastian Salcedo Gallo

    • Dartmouth
    • Dartmouth College

  • Mattias V Fitzpatrick

    • Dartmouth

  View abstract →

• Direct Spectroscopy of Ensemble Material Defect Behavior using 3D Waveguide and Microwave Combs

  ORAL

  March 19, 2025, 11:42 AM – March 19, 2025, 11:54 AM

  Presenters

  • Qianxu Wang

    • Dartmouth College

  Authors

  • Qianxu Wang

    • Dartmouth College

  • Sara Magdalena Gomez

    • Dartmouth College

  • Jake Freeman

    • Dartmouth College

  • Salil Bedkihal

    • Dartmouth College
    • University of Waterloo

  • Roy Leibovitz

    • Dartmouth College

  • Mattias V Fitzpatrick

    • Dartmouth

  View abstract →

• Strategies for superconducting transmon qubits with millisecond T1 relaxation time

  ORAL

  March 19, 2025, 11:54 AM – March 19, 2025, 12:06 PM

  Publication: Bal, M., Murthy, A.A., Zhu, S. et al. Systematic improvements in transmon qubit coherence enabled by niobium surface encapsulation. npj Quantum Inf 10, 43 (2024).

  Presenters

  • Mustafa Bal

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

  Authors

  • Mustafa Bal

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

  • Akshay Murthy

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

  • 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

  • Shaojiang Zhu

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

  • Daniel Bafia

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

  • Jasmine Panthee

    • Northwestern University

  • Zuhawn Sung

    • Fermi National Accelerator Laboratory (FNAL)
    • Fermi National Accelerator Laboratory

  • Jaeyel Lee

    • Fermilab
    • Fermi National Accelerator Laboratory

  • David V Zanten

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

  • Ivan Nekrashevich

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

  • Andrei Lunin

    • Fermi National Accelerator Laboratory

  • Alexander Romanenko

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

  • Anna Grassellino

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

  View abstract →

• Investigating Low Loss Substrates for Improved Qubit Coherence Times

  ORAL

  March 19, 2025, 12:06 PM – March 19, 2025, 12:18 PM

  Presenters

  • Daniel Bafia

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

  Authors

  • Daniel Bafia

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

  • Alexander Romanenko

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

  • Anna Grassellino

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

  • Bektur Abdisatarov

    • Fermi National Accelerator Laboratory

  • Akshay Murthy

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

  View abstract →

• Understanding mechanisms of RF loss in dielectric substrates in mK temperature range

  ORAL

  March 19, 2025, 12:18 PM – March 19, 2025, 12:30 PM

  Presenters

  • Ivan Nekrashevich

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

  Authors

  • Ivan Nekrashevich

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

  • Sergey Kazakov

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

  • Timergali Khabiboulline

    • Fermi National Accelerator Laboratory

  • Vyacheslav P Yakovlev

    • Fermi National Accelerator Laboratory (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

  View abstract →

• Investigation of the loss budget in superconducting transmon qubits

  ORAL

  March 19, 2025, 12:30 PM – March 19, 2025, 12:42 PM

  Presenters

  • Shaojiang Zhu

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

  Authors

  • Shaojiang Zhu

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

  • Andrei Lunin

    • Fermi National Accelerator Laboratory

  • Mustafa Bal

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

  • Francesco Crisa

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

  • Akshay Murthy

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

  • Jaeyel Lee

    • Fermilab
    • Fermi National Accelerator Laboratory

  • Daniel Bafia

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

  • Ivan Nekrashevich

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

  • Sabrina Garattoni

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

  • Alexander Romanenko

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

  • Anna Grassellino

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

  View abstract →

• Surpassing millisecond coherence in on chip superconducting quantum memories by optimizing materials and circuit design

  ORAL · Invited

  March 19, 2025, 12:42 PM – March 19, 2025, 1:18 PM

  Presenters

  • Suhas S Ganjam

    • Google LLC

  Authors

  • Suhas S Ganjam

    • Google LLC

  View abstract →

• Power and temperature dependence of High Q superconducting resonators

  ORAL

  March 19, 2025, 1:18 PM – March 19, 2025, 1:30 PM

  Publication: https://arxiv.org/abs/2205.06291v2

  Presenters

  • Ashish Alexander

    • University of Maryland College Park

  Authors

  • Ashish Alexander

    • University of Maryland College Park

  • Christopher Weddle

    • LPS

  • Christopher J Richardson

    • Laboratory for Physical Sciences (LPS)

  View abstract →

• Multi-moded CPW resonators for the investigation of two-level systems in quantum circuits

  ORAL

  March 19, 2025, 1:30 PM – March 19, 2025, 1:42 PM

  Presenters

  • Cliff Chen

    • AWS Center for Quantum Computing

  Authors

  • Jiansong Gao

    • AWS Center for Quantum Computing

  • Cliff Chen

    • AWS Center for Quantum Computing

  • David Perello

    • AWS Center for Quantum Computing

  • Yuki Sato

    • AWS Center for Quantum Computing

  • Matt Matheny

    • AWS Center for Quantum Computing

  • Ignace Jarrige

    • AWS Center for Quantum Computing
    • Amazon Web Services

  • Shahriar Aghaeimeibodi

    • AWS Center for Quantum Computing
    • AWS

  View abstract →

• Identifying TLS losses from Amorphous Oxides using Aluminum Superconducting Resonator

  ORAL

  March 19, 2025, 1:42 PM – March 19, 2025, 1:54 PM

  Presenters

  • Elizabeth Hedrick

    • Princeton University

  Authors

  • Elizabeth Hedrick

    • Princeton University

  • Faranak Bahrami

    • Princeton University

  • Atharv Joshi

    • Princeton University

  • Apoorv Jindal

    • Princeton University

  • Robert J Cava

    • Princeton University

  • Andrew A Houck

    • Princeton University

  • Nathalie P de Leon

    • Princeton University

  View abstract →

• High-Sensitivity Microwave Technique for Measuring Dielectric Loss in Coplanar Waveguide Resonators

  ORAL

  March 19, 2025, 1:54 PM – March 19, 2025, 2:06 PM

  Presenters

  • Xuanjing Chu

    • Columbia University

  Authors

  • Xuanjing Chu

    • Columbia University

  • Jinho Park

    • Columbia University

  • Jesse Balgley

    • Columbia University

  • Leonardo Ranzani

    • Raytheon BBN Technologies

  • Martin V Gustafsson

    • Raytheon BBN Technologies

  • James C Hone

    • Columbia University

  • Kin Chung Fong

    • Raytheon BBN Technologies

  View abstract →

• Effect of ion milling on superconducting Aluminum resonators

  ORAL

  March 19, 2025, 2:06 PM – March 19, 2025, 2:18 PM

  Publication: pending

  Presenters

  • Wridhdhisom Karar

    • University of Glasgow

  Authors

  • Wridhdhisom Karar

    • University of Glasgow

  • Martin Peter Weides

    • University of Glasgow

  • Jharna Paul

    • Kelvin Nanotechnology

  • Sergey Danilin

    • University of Glasgow

  • Paul G Baity

    • University of Glasgow

  • Valentino Seferai

    • University of Glasgow

  • Kaivan Karami

    • University of Glasgow
    • Kelvin Nanotechnology

  • Tanmay S Chandane

    • University of Glasgow

  View abstract →

• An Effective Reflection Mode for Hanger Coupled Superconducting Microwave Resonators

  ORAL

  March 19, 2025, 2:18 PM – March 19, 2025, 2:30 PM

  Presenters

  • John Pitten

    • University of Colorado, Boulder

  Authors

  • John Pitten

    • University of Colorado, Boulder

  • Nicholas Materise

    • Colorado School of Mines
    • Lawrence Livermore National Laboratory

  • Corey Rae H McRae

    • University of Colorado Boulder / NIST Boulder

  View abstract →