Superconducting Qubit State Transitions During Measurement

Presentations

• Suppression of measurement-induced state transitions in cosφ-coupling transmon readout: Part I. Experiment.

  Oral-In-person

  March 20, 2026, 8:00 AM – March 20, 2026, 8:12 AM

  Publication: [1] R. Dassonneville, et al., "Fast high-fidelity quantum non-demolition qubit readout via a nonperturbative cross-Kerr coupling", Phys. Rev. X 10, 011045 (2020).
  [2] C. Mori, et al., "High-power readout of a transmon qubit using a nonlinear coupling", arXiv 2507.03642 (2025).
  [3] C. Mori, et al., "Suppression of measurement-induced state transitions in cosϕ-coupling transmon readout", arXiv 2509.05126 (2025).

  Presenters

  • Francesca D'Esposito

    • Néel

  Authors

  • Francesca D'Esposito

    • Néel

  • Cyril Mori

    • Institut Neel

  • Alexandru Petrescu

    • Mines Paris

  • Lucas Ruela

  • Shelender Kumar

    • Institut Néel

  • Vishnu Narayanan Suresh

  • Waël Ardati

    • Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel

  • Dorian NICOLAS

    • Néel Institut, CNRS, Grenoble Alpes University

  • Giulio Cappelli

    • Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel

  • Arpit Ranadive

    • Institut Neel

  • Gwenael Le Gal

  • Martina Esposito

    • SPIN Consiglio Nazionale delle Ricerche (CNR)

  • Tomas Ramos

    • Consejo Superior de Investigaciones Cientificas (CSIC)

  • Quentin Ficheux

    • University of Maryland, College Park

  • Nicolas Roch

    • Institut Neel

  • Olivier Buisson

    • CNRS & Universite Grenoble Alpes

  • Vladimir MIlchakov

  View abstract →

• Suppression of measurement-induced state transitions in cosφ-coupling transmon readout: Part II. Theory

  Oral-In-person

  March 20, 2026, 8:12 AM – March 20, 2026, 8:24 AM

  Publication: https://arxiv.org/abs/2509.05126

  Presenters

  • Alexandru Petrescu

    • Mines Paris

  Authors

  • Francesca D'Esposito

    • Néel

  • Cyril Mori

    • Institut Neel

  • Alexandru Petrescu

    • Mines Paris

  • Lucas Ruela

  • Shelender Kumar

    • Institut Néel

  • Vishnu Narayanan Suresh

  • Waël Ardati

    • Univ. Grenoble Alpes, CNRS, Grenoble INP, Institut Néel

  • Dorian NICOLAS

    • Néel Institut, CNRS, Grenoble Alpes University

  • Giulio Cappelli

    • Université Grenoble Alpes, CNRS, Grenoble INP, Institut Néel

  • Arpit Ranadive

    • Institut Neel

  • Gwenael Le Gal

  • Martina Esposito

    • SPIN Consiglio Nazionale delle Ricerche (CNR)

  • Quentin Ficheux

    • University of Maryland, College Park

  • Nicolas Roch

    • Institut Neel

  • Olivier Buisson

    • CNRS & Universite Grenoble Alpes

  View abstract →

• Optimized master-equation simulations of strongly-driven transmon-resonator systems

  Oral-In-person

  March 20, 2026, 8:24 AM – March 20, 2026, 8:36 AM

  Publication: A paper is planned.

  Presenters

  • Ivan Iakoupov

    • Okinawa Institute of Science & Technology

  Authors

  • Ivan Iakoupov

    • Okinawa Institute of Science & Technology

  • William Munro

    • Okinawa Institute of Science & Technology

  View abstract →

• Driven-Dissipative Interpretation of Measurement-Induced State Transitions Beyond Semiclassical Predictions

  Oral-In-person

  March 20, 2026, 8:36 AM – March 20, 2026, 8:48 AM

  Publication: B.-S. Pan, Y.-H. Lin, and C.-H. Wang, arXiv: 2508.13150 (2025).

  Presenters

  • Bo-Syun Pan

    • National Taiwan University

  Authors

  • Bo-Syun Pan

    • National Taiwan University

  • Yen-Hsiang Lin

    • Tsinghua University

  • Chiao-Hsuan Wang

    • National Taiwan University

  View abstract →

• Measurement-induced state transitions in inductively shunted transmon, part I: Experiment

  Oral-In-person

  March 20, 2026, 8:48 AM – March 20, 2026, 9:00 AM

  Presenters

  • Nicholas Zobrist

    • Google LLC

  Authors

  • Nicholas Zobrist

    • Google LLC

  • Mostafa Khezri

    • Google LLC

  • John Mark Kreikebaum

    • Google LLC

  • Agustin Di Paolo

    • Google LLC

  • Sergei Isakov

  • Brian Lester

    • Google LLC

  • Yaxing Zhang

    • Google LLC

  • Clarke Smith

    • Google LLC

  • Daniel Sank

    • Google LLC

  View abstract →

• Measurement-induced state transitions in inductively shunted transmon, part II: Theory

  Oral-In-person

  March 20, 2026, 9:00 AM – March 20, 2026, 9:12 AM

  Presenters

  • Mostafa Khezri

    • Google LLC

  Authors

  • Mostafa Khezri

    • Google LLC

  • Nicholas Zobrist

  • John Mark Kreikebaum

  • Agustin Di Paolo

    • Google LLC

  • Sergei Isakov

  • Brian Lester

  • Yaxing Zhang

  • Clarke Smith

  • Daniel Sank

  View abstract →

• Investigating Measurement-Induced State Transitions in a Transmon due to Bifurcation-based Readout

  Oral-In-person

  March 20, 2026, 9:12 AM – March 20, 2026, 9:24 AM

  Presenters

  • Harshvardhan Babla

    • Yale University

  Authors

  • Harshvardhan Babla

    • Yale University

  • Qile Su

    • Yale University

  • Thomas Smith

    • Yale University

  • Shruti Puri

    • Yale University

  View abstract →

• Mitigating charge noise sensitivity of higher levels with an inductively shunted transmon - Part 1

  Oral-In-person

  March 20, 2026, 9:24 AM – March 20, 2026, 9:36 AM

  Presenters

  • Jennifer Giampalmo

    • Yale University

  Authors

  • Jennifer Giampalmo

    • Yale University

  • Vishakha Gupta

    • Yale University

  • Neel Thakur

    • Yale University

  • Maria Nowicki

    • University of Pittsburgh

  • William Kalfus

    • Yale University

  • Harshvardhan Babla

    • Yale University

  • Patrick Winkel

    • Alice & Bob

  • Stijn de Graaf

    • Yale University

  • Luigi Frunzio

    • Yale University

  • Robert Schoelkopf

    • Yale University

  View abstract →

• Mitigating charge noise sensitivity of higher levels with an inductively shunted transmon - Part 2

  Oral-In-person

  March 20, 2026, 9:36 AM – March 20, 2026, 9:48 AM

  Presenters

  • Vishakha Gupta

    • Yale University

  Authors

  • Vishakha Gupta

    • Yale University

  • Jennifer Giampalmo

    • Yale University

  • Neel Thakur

    • Yale University

  • Maria Nowicki

    • University of Pittsburgh

  • William Kalfus

    • Yale University

  • Harshvardhan Babla

    • Yale University

  • Patrick Winkel

    • Alice & Bob

  • Stijn de Graaf

    • Yale University

  • Luigi Frunzio

    • Yale University

  • Robert Schoelkopf

    • Yale University

  View abstract →

• Effect of Strong Drives on the Inductively Shunted Transmon and its Impact on Readout

  Oral-In-person

  March 20, 2026, 9:48 AM – March 20, 2026, 10:00 AM

  Presenters

  • Gustave Coulombe

    • Université de Sherbrooke

  Authors

  • Gustave Coulombe

    • Université de Sherbrooke

  • Alexander McDonald

    • Université de Sherbrooke

  • Marie-Frédérique Dumas

  • Alex Chapple

    • Universite de Sherbrooke

  • Alexandre Blais

    • Université de Sherbrooke

  View abstract →

• An open quantum systems picture of measurement-induced state transitions in fluxonium qubits (Part 1)

  Oral-In-person

  March 20, 2026, 10:00 AM – March 20, 2026, 10:12 AM

  Presenters

  • Jocelyn Liu

    • Princeton University

  Authors

  • Jocelyn Liu

    • Princeton University

  • Parth Jatakia

    • Princeton University

  • Lev Krayzman

    • Princeton University

  • Darren Ding

  • Danyang Chen

    • Northwestern University

  • Tianpu Zhao

    • Northwestern University

  • Jens Koch

    • Northwestern University

  • Andrew Houck

    • Princeton University

  View abstract →

• An open quantum systems picture of measurement-induced state transitions in fluxonium qubits (Part 2)

  Oral-In-person

  March 20, 2026, 10:12 AM – March 20, 2026, 10:24 AM

  Presenters

  • Parth Jatakia

    • Princeton University

  Authors

  • Parth Jatakia

    • Princeton University

  • Jocelyn Liu

    • Princeton University

  • Lev Krayzman

    • Princeton University

  • Darren Ding

  • Danyang Chen

    • Northwestern University

  • Tianpu Zhao

    • Northwestern University

  • Jens Koch

    • Northwestern University

  • Andrew Houck

    • Princeton University

  View abstract →

• Charge-Tuned Measurement-Induced State Transitions in a Transmon Qubit

  Oral-In-person

  March 20, 2026, 10:24 AM – March 20, 2026, 10:36 AM

  Presenters

  • LiChieh Hsiao

    • Academia Sinica

  Authors

  • LiChieh Hsiao

    • Academia Sinica

  • WeiEn Lin

  View abstract →

• Towards multi-qubit readout simulations

  Oral-In-person

  March 20, 2026, 10:36 AM – March 20, 2026, 10:48 AM

  Presenters

  • Baptiste Hoyau

    • Institut Quantique, Université de Sherbrooke

  Authors

  • Baptiste Hoyau

    • Institut Quantique, Université de Sherbrooke

  • Alexander McDonald

  • Benjamin Levitan

    • Université de Sherbrooke

  • Tianrui Xu

  • Alexandre Blais

    • Université de Sherbrooke

  View abstract →

• Readout fidelity of Floquet optimized low anharmonicity transmons

  Oral-In-person

  March 20, 2026, 10:48 AM – March 20, 2026, 11:00 AM

  Presenters

  • Param Patel

    • University of Pittsburgh

  Authors

  • Param Patel

    • University of Pittsburgh

  • Daniel Weiss

    • Quantum Circuits Inc.

  • Jacob Repicky

    • Yale University

  • Gaurav Agarwal

    • Yale University

  • Maria Nowicki

    • University of Pittsburgh

  • Steven Girvin

    • Yale University

  • Michael Hatridge

    • Yale University

  View abstract →