Flux and Unconventional Qubits II

Presentations

• Long-lifetime NbN-based self-shunted flux qubit with large anharmonicity

  ORAL

  March 18, 2026, 8:00 AM – March 18, 2026, 8:12 AM

  Presenters

  • Tokunoshin Uchida

    • Graduate School of Engineering, Tohoku University, Japan

  Authors

  • Tokunoshin Uchida

    • Graduate School of Engineering, Tohoku University, Japan

  • Singo Nozaki

    • Graduate School of Engineering, Tohoku University, Japan

  • Koki Honda

    • Graduate School of Engineering, Tohoku University
    • Graduate School of Engineering, Tohoku University, Japan

  • Duong Pham

    • National Institute of Information and Communications Technology (NICT)
    • National Institute of Information and Communications Technology, Japan

  • Hirotaka Terai

    • National Institute of Information and Communications Technology (NICT)
    • Advanced ICR Research Institute, National Institute of Information and Communications Technology
    • NICT
    • National Institute of Information and Communications Technology, Japan

  • Hiroki Kutsuma

    • Graduate School of Engineering, Tohoku University, Japan

  • Taro Yamashita

    • Graduate School of Engineering, Tohoku University
    • Graduate School of Engineering, Tohoku University, Japan

  View abstract →

• Flip-chip Fluxonium for Coherent Analog Quantum Computing

  ORAL

  March 18, 2026, 8:12 AM – March 18, 2026, 8:24 AM

  Presenters

  • Lorenzo Scarpelli

    • Qilimanjaro Quantum Tech

  Authors

  • Lorenzo Scarpelli

    • Qilimanjaro Quantum Tech

  • Mireia Tena Zuazolacigorraga

    • Qilimanjaro Quantum Tech

  • Oscar Pihl

    • Qilimanjaro Quantum Tech

  • Yifei Chen

    • Qilimanjaro Quantum Tech

  • Fabio Henriques

    • Qilimanjaro Quantum Tech

  • Andrea Pérez

    • Qilimanjaro Quantum Tech

  • Victor Sanchez

    • Qilimanjaro Quantum Tech

  • Gonzalo Troncoso

    • Qilimanjaro Quantum Tech

  • María Hita Pérez

    • Qilimanjaro Quantum Tech

  • Ely Farrés

    • Qilimanjaro Quantum Tech

  • Volkan Tozan

    • Qilimanjaro Quantum Tech

  • Jamil Ahmad

    • Qilimanjaro Quantum Tech

  • Diego Fernández

    • Qilimanjaro Quantum Tech

  • David López Núñez

    • Qilimanjaro Quantum Tech

  • David Eslava

    • Qilimanjaro Quantum Tech

  • Timothy Duty

    • Qilimanjaro Quantum Tech

  View abstract →

• Baseband control of biased-noise fluxonium with tunable Josephson energy

  ORAL

  March 18, 2026, 8:24 AM – March 18, 2026, 8:36 AM

  Presenters

  • Pablo Aramburu Sanchez

    • University of Colorado, Boulder

  Authors

  • Pablo Aramburu Sanchez

    • University of Colorado, Boulder

  • Rohan N Rajmohan

    • Northwestern University

  • Elliot Roberts

    • University of Colorado, Boulder

  • Arjun Dalwadi

    • University of Colorado, Boulder

  • Yuxin Kang

    • Northwestern University

  • Alexander Marakov

    • Northrop Grumman Mission Systems

  • Moe S Khalil

    • Northrop Grumman

  • Mallika T Randeria

    • MIT Lincoln Laboratory

  • Kyle Serniak

    • MIT Lincoln Laboratory

  • Jens Koch

    • Northwestern University

  • Ryan J Epstein

    • Northrop Grumman - Mission Systems

  • David G Ferguson

    • Northrop Grumman Mission Systems

  • András Gyenis

    • University of Colorado, Boulder
    • University of Colorado Boulder
    • Univ of Copenhagen

  View abstract →

• Understanding drive-induced state transitions in fluxonium: part 2/2

  ORAL

  March 18, 2026, 8:36 AM – March 18, 2026, 8:48 AM

  Presenters

  • Chuyao Tong

    • Stanford University

  Authors

  • Chuyao Tong

    • Stanford University

  • Paul R Varosy

    • Stanford University / SLAC National Accelerator Laboratory

  • Chunyang Ding

    • Stanford University

  • Nikitha Jain

    • Stanford University

  • Alex Arimoto Chapple

    • Universite de Sherbrooke

  • Boris Varbanov

    • University of Sherbrooke
    • Université de Sherbrooke
    • Universite de Sherbrooke

  • Alexander McDonald

    • Université de Sherbrooke
    • Universite de Sherbrooke

  • Sai Pavan Chitta

    • Northwestern University

  • Danyang Chen

    • Northwestern University

  • Tianpu Zhao

    • Northwestern University

  • Alexandre Blais

    • Université de Sherbrooke
    • University of Sherbrooke
    • Universite de Sherbrooke
    • Institut Quantique, Département de Physique, Université de Sherbrooke

  • Jens Koch

    • Northwestern University

  • David I Schuster

    • Stanford University / SLAC National Accelerator Laboratory
    • University of Chicago
    • Stanford

  View abstract →

• Understanding drive-induced state transitions in fluxonium: part 1/2

  ORAL

  March 18, 2026, 8:48 AM – March 18, 2026, 9:00 AM

  Presenters

  • Paul R Varosy

    • Stanford University / SLAC National Accelerator Laboratory

  Authors

  • Paul R Varosy

    • Stanford University / SLAC National Accelerator Laboratory

  • Chuyao Tong

    • Stanford University

  • Chunyang Ding

    • Stanford University

  • Nikitha Jain

    • Stanford University

  • Alex Arimoto Chapple

    • Universite de Sherbrooke

  • Boris Varbanov

    • University of Sherbrooke
    • Université de Sherbrooke
    • Universite de Sherbrooke

  • Alexander McDonald

    • Université de Sherbrooke

  • Sai Pavan Chitta

    • Northwestern University

  • Danyang Chen

    • Northwestern University

  • Tianpu Zhao

    • Northwestern University

  • Alexandre Blais

    • Université de Sherbrooke
    • University of Sherbrooke
    • Universite de Sherbrooke
    • Institut Quantique, Département de Physique, Université de Sherbrooke

  • Jens Koch

    • Northwestern University

  • David I Schuster

    • Stanford University / SLAC National Accelerator Laboratory
    • University of Chicago
    • Stanford

  View abstract →

• Stabilizing Driven Steady States of Superconducting Qubits

  ORAL

  March 18, 2026, 9:00 AM – March 18, 2026, 9:12 AM

  Presenters

  • D. Dominic Briseno-Colunga

    • Chapman University

  Authors

  • D. Dominic Briseno-Colunga

    • Chapman University

  • Bibek Bhandari

    • Chapman University

  • Abhishek Chakraborty

    • University of Rochester

  • Chuan-Hong Liu

    • Lawrence Berkeley National Laboratory

  • David Ivan Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  • Andrew N Jordan

    • Chapman University

  • Justin Dressel

    • Chapman University

  View abstract →

• Fast flux-control of T₁-protected fluxonium qubits via tunable coherent quantum phase tunnelling

  ORAL · Invited

  March 18, 2026, 9:12 AM – March 18, 2026, 9:48 AM

  Publication: Fast gates for bit-flip protected superconducting qubits, arXiv:2504.04807

  Presenters

  • Christian A Siegele

    • Institute of Science and Technology Austria (ISTA)

  Authors

  • Christian A Siegele

    • Institute of Science and Technology Austria (ISTA)

  • Lucky N. Kapoor

    • Institute of Science and Technology Austria

  • Samarth Hawaldar

    • Institute of Science and Technology Austria

  • Alesya Sokolova

    • Institute of Science and Technology Austria

  • Farid Hassani Bijarbooneh

    • Massachusetts Institute of Technology

  • Johannes M Fink

    • Institute of Science and Technology Austria

  View abstract →

• Rotor codes & cos(Nφ) qubits

  ORAL

  March 18, 2026, 9:48 AM – March 18, 2026, 10:00 AM

  Presenters

  • Eli J Weissler

    • University of Colorado, Boulder

  Authors

  • Eli J Weissler

    • University of Colorado, Boulder

  • Thomas B Smith

    • Yale University

  • zhenxing liu

    • University of Colorado, Boulder

  • Jinhua Zhang

    • University of Colorado, Boulder

  • Ben Q Baragiola

    • Xanadu Quantum Technologies

  • Arne L Grimsmo

    • AWS Center for Quantum Computing

  • Joshua Combes

    • The University of Melbourne

  View abstract →

• The Superconducting Grid-States Qubit: Theory

  ORAL

  March 18, 2026, 10:00 AM – March 18, 2026, 10:12 AM

  Publication: https://arxiv.org/abs/2509.14656

  Presenters

  • Thomas Andrew Ersevim

    • University of California, Berkeley

  Authors

  • Long B Nguyen

    • Lawrence Berkeley National Laboratory

  • Hyunseong Kim

    • University of California, Berkeley

  • Dat Thanh Le

    • University of Queensland
    • University of Queensland, Brisbane

  • Thomas Andrew Ersevim

    • University of California, Berkeley

  • Sai Pavan Chitta

    • Northwestern University

  • Trevor Chistolini

    • University of California, Berkeley
    • Nokia Bell Labs

  • Christian Jünger

    • University of California, Berkeley
    • Lawrence Berkeley National Laboratory

  • Clarke Smith

    • Google LLC

  • Thomas M Stace

    • University of Queensland
    • Q-CTRL Pty Ltd

  • Jens Koch

    • Northwestern University

  • David Ivan Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  View abstract →

• The Superconducting Grid-States Qubit: Experiment 

  ORAL

  March 18, 2026, 10:12 AM – March 18, 2026, 10:24 AM

  Publication: https://arxiv.org/abs/2509.14656

  Presenters

  • Hyunseong Kim

    • University of California, Berkeley

  Authors

  • Hyunseong Kim

    • University of California, Berkeley

  • Long Bao Nguyen

    • AWS Center for Quantum Computing
    • Lawrence Berkeley National Laboratory

  • Dat T Le

    • University of Queensland

  • Thomas Andrew Ersevim

    • University of California, Berkeley

  • Sai Pavan Chitta

    • Northwestern University

  • Trevor Chistolini

    • University of California, Berkeley
    • Nokia Bell Labs

  • Christian Juenger

    • University of California, Berkeley

  • Clarke Smith

    • Google LLC

  • Thomas M Stace

    • University of Queensland
    • Q-CTRL Pty Ltd

  • Jens Koch

    • Northwestern University

  • David Ivan Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  View abstract →

• The Cooper-Quartet Box

  ORAL

  March 18, 2026, 10:24 AM – March 18, 2026, 10:36 AM

  Presenters

  • Erwan Roverch

    • École Normale Supérieure – PSL

  Authors

  • Erwan Roverch

    • École Normale Supérieure – PSL

  • Alvise Borgognoni

    • Mines ParisTech

  • Kyrylo Gerashchenko

    • Laboratoire Kastler-Brossel

  • Marius Villiers

    • École normal supérieure Paris-Saclay

  • Clarke Smith

    • Google LLC

  • Alexandru Petrescu

    • INRIA
    • Mines Paris - INRIA

  • Philippe Campagne-Ibarcq

    • INRIA
    • Inria

  • Benoit Doucot

    • LPTHE, Sorbonne Université

  • Zaki Leghtas

    • Mines Paris
    • LPENS, Ecole Normale Supérieure-PSL

  View abstract →

• Superconducting Circuit Elements for Protected Qubits

  ORAL

  March 18, 2026, 10:36 AM – March 18, 2026, 10:48 AM

  Publication: [1] P. Brooks, A. Kitaev, J. Preskill, Protected gates for superconducting qubits, Phys. Rev. A 87, 052306 (2013).
  [2] A.P. McFadden et al, NPJ Quantum Info 11, 11 (2025)
  [3] A. Goswami et al, Applied Physics Letters 121, 064001 (2022)
  [4] P.S. Finnegan et al, Mat Sci Semi Process 92, 80 (2019)

  Presenters

  • Sueli D Skinner Ramos

    • Sandia National Laboratories

  Authors

  • Sueli D Skinner Ramos

    • Sandia National Laboratories

  • Patrick S Finnegan

    • Sandia National Laboratories

  • Robert Reyna

    • Sandia National Laboratories

  • Christopher D Arose

    • Sandia National Laboratories

  • John Nogan

    • Center of Integrated Nanotechnologies, Sandia National Laboratories
    • Sandia National Laboratories

  • András Gyenis

    • University of Colorado, Boulder
    • University of Colorado Boulder
    • Univ of Copenhagen

  • Sarah Jones

    • University of Colorado, Boulder
    • University of Colorado Boulder

  • Stephen M Carr

    • Sandia National Laboratories

  View abstract →

• Enhanced superconducting diode effects due to charging energy

  ORAL

  March 18, 2026, 10:48 AM – March 18, 2026, 11:00 AM

  Presenters

  • Bishnu Karki

    • University of Houston

  Authors

  • Bishnu Karki

    • University of Houston

  • Kalyan S Mihut

    • University of Houston

  • Boqun Song

    • University of Houston

  • Pavan Hosur

    • University of Houston

  View abstract →