Flux and Unconventional Qubits II

Presentations

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

  Oral-In-person

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

  Presenters

  • Tokunoshin Uchida

    • Graduate School of Engineering, Tohoku University

  Authors

  • Tokunoshin Uchida

    • Graduate School of Engineering, Tohoku University

  • Singo Nozaki

  • Koki Honda

    • Tohoku University, Japan

  • Duong Pham

  • Hirotaka Terai

  • Hiroki Kutsuma

  • Taro Yamashita

  View abstract →

• Flip-chip Fluxonium for Coherent Analog Quantum Computing

  Oral-In-person

  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

  • Oscar Pihl

  • Yifei Chen

    • Qilimanjaro Quantum Tech

  • Fabio Henriques

  • Andrea Pérez

  • Victor Sanchez

  • Gonzalo Troncoso

  • María Hita Pérez

  • Ely Farrés

  • Volkan Tozan

  • Jamil Ahmad

  • Diego Fernández

  • David López Núñez

  • David Eslava

    • Qilimanjaro Quantum Tech

  • Timothy Duty

  View abstract →

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

  Oral-In-person

  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 Rajmohan

    • Northwestern University

  • Elliot Roberts

  • Arjun Dalwadi

  • Yuxin Kang

  • Alexander Marakov

    • Northrop Grumman Mission Systems

  • Moe Khalil

    • Northrop Grumman

  • Mallika Randeria

    • MIT Lincoln Laboratory

  • Kyle Serniak

    • MIT Lincoln Laboratory

  • Jens Koch

    • Northwestern University

  • Ryan Epstein

    • Northrop Grumman - Mission Systems

  • David Ferguson

    • Northrop Grumman Mission Systems

  • András Gyenis

    • Univ of Copenhagen

  View abstract →

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

  Oral-In-person

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

  Presenters

  • Chuyao Tong

    • Stanford University

  Authors

  • Chuyao Tong

    • Stanford University

  • Paul Varosy

    • Stanford University

  • Chunyang Ding

    • Stanford

  • Nikitha Jain

  • Alex Chapple

    • Universite de Sherbrooke

  • Boris Varbanov

  • Alexander McDonald

  • Sai Pavan Chitta

    • Northwestern University

  • Danyang Chen

    • Northwestern University

  • Tianpu Zhao

    • Northwestern University

  • Alexandre Blais

    • Université de Sherbrooke

  • Jens Koch

    • Northwestern University

  • David Schuster

    • Stanford University / SLAC National Accelerator Laboratory

  View abstract →

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

  Oral-In-person

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

  Presenters

  • Paul Varosy

    • Stanford University

  Authors

  • Paul Varosy

    • Stanford University

  • Chuyao Tong

    • Stanford University

  • Chunyang Ding

    • Stanford University

  • Nikitha Jain

  • Alex Chapple

    • Universite de Sherbrooke

  • Boris Varbanov

  • Alexander McDonald

    • Université de Sherbrooke

  • Sai Pavan Chitta

    • Northwestern University

  • Danyang Chen

    • Northwestern University

  • Tianpu Zhao

    • Northwestern University

  • Alexandre Blais

    • Université de Sherbrooke

  • Jens Koch

    • Northwestern University

  • David Schuster

    • Stanford University / SLAC National Accelerator Laboratory

  View abstract →

• Stabilizing Driven Steady States of Superconducting Qubits

  Oral-In-person

  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 Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  • Andrew Jordan

    • Chapman University

  • Justin Dressel

    • Chapman University

  View abstract →

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

  Invited-In-person · 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 Siegele

    • Institute of Science and Technology Austria ISTA

  Authors

  • Christian Siegele

    • Institute of Science and Technology Austria ISTA

  • Lucky 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 Fink

    • Institute of Science and Technology Austria

  View abstract →

• Rotor codes & cos(Nφ) qubits

  Oral-In-person

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

  Presenters

  • Eli Weissler

    • University of Colorado, Boulder

  Authors

  • Eli Weissler

    • University of Colorado, Boulder

  • Thomas Smith

    • Yale University

  • zhenxing liu

    • University of Colorado, Boulder

  • Jinhua Zhang

  • Ben Baragiola

    • Macquarie University

  • Arne Grimsmo

  • Joshua Combes

  View abstract →

• The Superconducting Grid-States Qubit: Theory

  Oral-In-person

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

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

  Presenters

  • Thomas Ersevim

    • University of California, Berkeley

  Authors

  • Long Nguyen

  • Hyunseong Kim

    • University of California, Berkeley

  • Dat Thanh Le

  • Thomas Ersevim

    • University of California, Berkeley

  • Sai Pavan Chitta

    • Northwestern University

  • Trevor Chistolini

    • University of California, Berkeley

  • Christian Jünger

  • Clarke Smith

    • Google LLC

  • Thomas Stace

    • Q-CTRL Pty Ltd

  • Jens Koch

    • Northwestern University

  • David Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  View abstract →

• The Superconducting Grid-States Qubit: Experiment

  Oral-In-person

  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 Nguyen

    • AWS Center for Quantum Computing

  • Dat Le

  • Thomas Ersevim

    • University of California, Berkeley

  • Sai Pavan Chitta

    • Northwestern University

  • Trevor Chistolini

    • University of California, Berkeley

  • Christian Juenger

    • University of California, Berkeley

  • Clarke Smith

    • Google LLC

  • Tom Stace

  • Jens Koch

    • Northwestern University

  • David Santiago

    • Lawrence Berkeley National Laboratory

  • Irfan Siddiqi

    • University of California, Berkeley

  View abstract →

• The Cooper-Quartet Box

  Oral-In-person

  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

  • Philippe Campagne-Ibarcq

  • Benoit Doucot

  • Zaki Leghtas

  View abstract →

• Superconducting Circuit Elements for Protected Qubits

  Oral-In-person

  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 Skinner Ramos

    • Sandia National Laboratories

  Authors

  • Sueli Skinner Ramos

    • Sandia National Laboratories

  • Patrick Finnegan

  • Robert Reyna

  • Christopher Arose

  • John Nogan

  • András Gyenis

    • Univ of Copenhagen

  • Sarah Jones

  • Stephen Carr

    • Sandia National Laboratories

  View abstract →

• Enhanced superconducting diode effects due to charging energy

  Oral-In-person

  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 Mihut

  • Boqun Song

  • Pavan Hosur

    • University of Houston

  View abstract →