Superconducting Qubits: Modelling and Coupler Interactions

Presentations

• Spectator and stray errors in surface-code Hamiltonian

  ORAL

  March 17, 2026, 8:00 AM – March 17, 2026, 8:12 AM

  Publication: Xuexin Xu, Kuljeet Kaur, Chloé Vignes, Mohammad H. Ansari, John M. Martinis, "Surface-Code Hardware Hamiltonian", DOI: https://arxiv.org/pdf/2507.06201
  
  X. Xu, Manabputra, C. Vignes, M. H. Ansari, John M. Martinis, "Lattice hamiltonians and stray interactions within quantum processors," Physical Review Applied 22, 064030 (2024). DOI: https://doi.org/10.1103/PhysRevApplied.22.064030
  
  X. Xu and M. H. Ansari, zz freedom in two-qubit gates, Physical Review Applied 15, 064074 (2021). https://doi.org/10.1103/PhysRevApplied.15.064074
  
  X. Xu and M. Ansari, Parasitic-free gate: An error protected cross-resonance switch in weakly tunable ar-
  chitectures, Physical Review Applied 19, 024057 (2023). DOI: https://doi.org/10.1103/PhysRevApplied.19.024057
  
  J. Ku, X. Xu, M. Brink, D. C. McKay, J. B. Hertzberg, M. H. Ansari, and B. L. T. Plourde, Suppression of unwanted zz interactions in a hybrid two-qubit system, Physical Review Letters 125, 200504 (2020). DOI: https://doi.org/10.1103/PhysRevLett.125.200504

  Presenters

  • Mohammad H Ansari

    • Forschungszentrum Jülich GmbH
    • FZ Juelich

  Authors

  • Mohammad H Ansari

    • Forschungszentrum Jülich GmbH
    • FZ Juelich

  • John M Martinis

    • University of California, Santa Barbara
    • Qolab

  • Chloé Vignes

    • MIT

  • Xuexin Xu

    • Forschungszentrum Juelich GmbH

  View abstract →

• Universal quantum computing via globally controlled architectures

  ORAL

  March 17, 2026, 8:12 AM – March 17, 2026, 8:24 AM

  Publication: arXiv:2509.09271; arXiv:2412.11782; arXiv:2407.01182; arXiv:2510.25996

  Presenters

  • Francesco Caravelli

    • Planckian srl/LANL.gov

  Authors

  • Francesco Caravelli

    • Planckian srl/LANL.gov

  View abstract →

• Comparative Analysis of Qubit-Package Coupling Extraction Techniques

  ORAL

  March 17, 2026, 8:24 AM – March 17, 2026, 8:36 AM

  Presenters

  • Reza Molavi

    • Google Quantum AI

  Authors

  • Reza Molavi

    • Google Quantum AI

  • Ebrahim Forati

    • Google Quantum AI

  • Yaxing Zhang

    • Google
    • Google Quantum AI

  • Andrey R Klots

    • Google Quantum AI

  • Juan Atalaya

    • Google LLC
    • Google Quantum AI

  • Dogan Timucin

    • Google Quantum AI

  • Brandon Langley

    • Google Quantum AI

  • Ghazi Khan

    • Google Quantum AI

  • Alexander N Korotkov

    • Google Quantum AI

  • Michel H Devoret

    • Google LLC
    • Google Quantum AI

  View abstract →

• Modeling circuit QED systems at Google - Part 1 of 2

  ORAL

  March 17, 2026, 8:36 AM – March 17, 2026, 8:48 AM

  Presenters

  • Agustin Di Paolo

    • Google
    • Google LLC

  Authors

  • Agustin Di Paolo

    • Google
    • Google LLC

  • Alice Pagano

    • Google LLC
    • Google Quantum AI

  • Sofia Gonzalez Garcia

    • University of California, Santa Barbara

  • Aaron Szasz

    • Google

  • Dvir Kafri

    • Google LLC

  • Guifre Vidal Bonafont

    • Google LLC

  View abstract →

• Modeling circuit QED systems at Google - Part 2 of 2

  ORAL

  March 17, 2026, 8:48 AM – March 17, 2026, 9:00 AM

  Presenters

  • Alice Pagano

    • Google LLC
    • Google Quantum AI

  Authors

  • Alice Pagano

    • Google LLC
    • Google Quantum AI

  • Agustin Di Paolo

    • Google
    • Google LLC

  • Sofia Gonzalez Garcia

    • University of California, Santa Barbara

  • Aaron M S Szasz

    • Google LLC

  • Dvir Kafri

    • Google LLC

  • Guifre Vidal Bonafont

    • Google LLC

  View abstract →

• Nonlinear quantum evolution in post-selected non-Hermitian dynamics.

  ORAL

  March 17, 2026, 9:00 AM – March 17, 2026, 9:12 AM

  Publication: Griffiths, D. & Schroeter, D. Introduction to Quantum Mechanics isbn: 9781107189638. https://books.
  google.com/books?id=82FjDwAAQBAJ (Cambridge University Press, 2018).
  
  2. Lidar, D. A. Lecture Notes on the Theory of Open Quantum Systems 2020. arXiv: 1902.00967 [quant-ph].
  https://arxiv.org/abs/1902.00967.
  
  3. Thorne, K. & Blandford, R. Modern Classical Physics: Optics, Fluids, Plasmas, Elasticity, Relativity,
  and Statistical Physics isbn: 9781400848898. https://books.google.com/books?id=U1S6BQAAQBAJ
  (Princeton University Press, 2017).
  
  4. Djordjevic, I. Quantum Information Processing and Quantum Error Correction: An Engineering Ap-
  proach isbn: 9780123854919. https://books.google.com/books?id=frvBRTnWpEIC (Elsevier Science,
  2012).
  
  5. Hejlesen, Z. Nonlinear Quantum Mechanics PhD thesis (2019). https://www.duo.uio.no/handle/
  10852/70439.
  
  6. Grover, L. K. A fast quantum mechanical algorithm for database search 1996. arXiv: quant-ph/9605043
  [quant-ph]. https://arxiv.org/abs/quant-ph/9605043.
  
  7. Abrams, D. S. & Lloyd, S. Nonlinear Quantum Mechanics Implies Polynomial-Time Solution for¡mml:math
  xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"¿¡mml:mi mathvariant="italic"¿NP¡/mml:mi¿¡
  Complete and ¡mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"¿¡mml:mi
  mathvariant="italic"¿P¡/mml:mi¿¡/mml:math¿Problems. Physical Review Letters 81, 3992–3995. issn:
  1079-7114. http://dx.doi.org/10.1103/PhysRevLett.81.3992 (Nov. 1998).
  8. Schroeder, D. An Introduction to Thermal Physics isbn: 9780201380279. https://books.google.com/
  books?id=1gosQgAACAAJ (Addison Wesley, 2000).

  Presenters

  • Jacob Purcell

    • Indiana University Indianapolis

  Authors

  • Jacob Purcell

    • Indiana University Indianapolis

  • Yogesh N Joglekar

    • Indiana University - Purdue University Indianapolis

  View abstract →

• Towards Non-reciprocal Interactions between Degenerate Qubits via Spatio-temporal Modulation

  ORAL

  March 17, 2026, 9:12 AM – March 17, 2026, 9:24 AM

  Presenters

  • Zhiyin Tu

    • University of Maryland College Park

  Authors

  • Zhiyin Tu

    • University of Maryland College Park

  • Violet Workman

    • University of Illinois Urbana-Champaign

  • Gaurav Bahl

    • University of Illinois at Urbana-Champaign

  • Alicia J Kollar

    • University of Maryland College Park

  View abstract →

• Characterization of superconducting diodes in quantum circuits

  ORAL

  March 17, 2026, 9:24 AM – March 17, 2026, 9:36 AM

  Presenters

  • Arpit Arora

    • University of California, Los Angeles

  Authors

  • Arpit Arora

    • University of California, Los Angeles

  • Nicolas Dirnegger

    • UCLA

  • Aziza Almanakly

    • Massachusetts Institute of Technology

  • David Pahl

    • Massachusetts Institute of Technology

  • Joel I-Jan Wang

    • Massachusetts Institute of Technology

  • William D Oliver

    • Massachusetts Institute of Technology

  • Prineha Narang

    • University of California, Los Angeles

  View abstract →

•  Nonreciprocal qubit coupling through superconducting diodes for modular quantum circuits

  ORAL

  March 17, 2026, 9:36 AM – March 17, 2026, 9:48 AM

  Presenters

  • Nicolas Dirnegger

    • UCLA

  Authors

  • Nicolas Dirnegger

    • UCLA

  • Arpit Arora

    • University of California, Los Angeles

  • Aziza Almanakly

    • Massachusetts Institute of Technology

  • David Pahl

    • Massachusetts Institute of Technology

  • Joel I-Jan Wang

    • Massachusetts Institute of Technology

  • William D Oliver

    • Massachusetts Institute of Technology

  • Prineha Narang

    • University of California, Los Angeles

  View abstract →

• Exploring parametric gate rate limits in transmons and other couplers (part 1)

  ORAL

  March 17, 2026, 9:48 AM – March 17, 2026, 10:00 AM

  Presenters

  • Jacob J Repicky

    • Yale University

  Authors

  • Jacob J Repicky

    • Yale University

  • Jacob J Repicky

    • Yale University

  • Girish B Kumbhar

    • Yale University

  • Mingkang Xia

    • University of Pittsburgh

  • Param Patel

    • University of Pittsburgh
    • Yale University

  • Maria F Nowicki

    • University of Pittsburgh

  • Matthew Capocci

    • Northwestern University

  • Jens Koch

    • Northwestern University

  • Michael Hatridge

    • Yale University
    • University of Pittsburgh
    • Department of Applied Physics, Yale University

  View abstract →

• Exploring parametric gate rate limits in transmons and other couplers (Part 2)

  ORAL

  March 17, 2026, 10:00 AM – March 17, 2026, 10:12 AM

  Presenters

  • Girish B Kumbhar

    • Yale University

  Authors

  • Girish B Kumbhar

    • Yale University

  • Jacob J Repicky

    • Yale University

  • Mingkang Xia

    • University of Pittsburgh
    • University of Pittsburgh, Yale University

  • Matthew Capocci

    • Northwestern University

  • Jens Koch

    • Northwestern University

  • Michael Hatridge

    • Yale University
    • University of Pittsburgh
    • Department of Applied Physics, Yale University

  View abstract →

• Design Considerations for CZ Gates with Short-Lived Couplers in Superconducting Qubits

  ORAL

  March 17, 2026, 10:12 AM – March 17, 2026, 10:24 AM

  Presenters

  • Thomas M Hazard

    • MIT Lincoln Laboratory

  Authors

  • Thomas M Hazard

    • MIT Lincoln Laboratory

  • Kunal L. Tiwari

    • MIT Lincoln Laboratory

  • Kyle Serniak

    • MIT Lincoln Laboratory

  • Silas Hoffman

    • Laboratory for Physical Sciences (LPS)

  View abstract →

• Fast $R_{xx}(\theta)$ gate operations in a tunable inductive coupler between fluxonium qubits

  ORAL

  March 17, 2026, 10:24 AM – March 17, 2026, 10:36 AM

  Presenters

  • Kichan Park

    • Korea Adv Inst of Sci & Tech

  Authors

  • Kichan Park

    • Korea Adv Inst of Sci & Tech

  View abstract →

• Superinductor-based non-perturbative ultrastrong coupling in a superconducting quantum circuit

  ORAL

  March 17, 2026, 10:36 AM – March 17, 2026, 10:48 AM

  Publication: [1] P. Forn-Díaz, et al. "Ultrastrong coupling regimes of light-matter interaction." Reviews of Modern Physics 91.2 025005 (2019).
  [2] A. Torras-Coloma, et al. "Superinductor-based ultrastrong coupling in a superconducting circuit." arXiv preprint arXiv:2507.09339 (2025).

  Presenters

  • Alba Torras Coloma

    • Institute of High Enrgy Physics (IFAE)

  Authors

  • Alba Torras Coloma

    • Institute of High Enrgy Physics (IFAE)

  • Guillermo del Riego

    • Institue of High Energy Physics

  • Ariadna Gómez-del-Pulgar-Martínez

    • Insititute of High Energy Physics

  • Luca Cozzolino

    • Inst High Enrgy Phy (IFAE) UAB

  • Elia Bertoldo

    • Inst High Enrgy Phy (IFAE) UAB

  • Pol Forn-Díaz

    • Inst High Enrgy Phy (IFAE) UAB

  View abstract →

• Fast-flux tunable drive filter for superconducting qubits enabling control, reset, and thermometry.

  ORAL

  March 17, 2026, 10:48 AM – March 17, 2026, 11:00 AM

  Publication: Sah, A., Kundu, S., Suominen, H. et al. Decay-protected superconducting qubit with fast control enabled by integrated on-chip filters. Commun Phys 7, 227 (2024). https://doi.org/10.1038/s42005-024-01733-3.

  Presenters

  • Aashish Sah

    • QCD Labs, Department of Applied Physics, Aalto University

  Authors

  • Aashish Sah

    • QCD Labs, Department of Applied Physics, Aalto University

  • Suman Kundu

    • QCD Labs, Department of Applied Physics, Aalto University

  • Priyank Singh

    • QCD Labs, Department of Applied Physics, Aalto University

  • Eemeli Forsbom

    • QCD Labs, Department of Applied Physics, Aalto University

  • Vasilii Vadimov

    • QCD Labs, Department of Applied Physics, Aalto University

  • Mikko Möttönen

    • QCD Labs, Department of Applied Physics, Aalto University
    • Aalto University

  View abstract →