Radiation Impact on Superconducting Qubits (RISQ 2024)

30 May 2024, 00:00 → 31 May 2024, 23:59 America/Chicago

One West (Wilson Hall)

Carolyn Johnson, Daniel Baxter

This is the first iteration of a new workshop series on the subject of Radiation Impact on Superconducting Qubits (RISQ) that will bring together the broader QIS and particle physics communities to assess the effects of radiation and cosmic rays on superconducting solid-state qubits, and development of the tools needed to address the problem. The workshop will take place at Fermi National Accelerator Laboratory on May 30-31, 2024 and will feature two days of invited talks, detailed discussions, and tours of dedicated lab facilities for addressing these issues. Tours will be allocated on a first-come, first-served basis, so please register as soon as possible and indicate that you would like a tour if interested. For those who do not attend tours, space will be provided for working discussions.

On May 29, 2024, a related satellite workshop will be held on the subject of GEANT4/G4CMP development for the modeling of energy dissipation in solid-state systems. The registration form includes a question as to whether you intend to come to this satellite workshop day, but separate registration will be required (instructions to be circulated at a later date).

Alongside this workshop, we will hold a ribbon cutting for the Quantum Underground Instrumentation Experimental Testbed (QUIET), the newly-commissioned QSC underground QIS facility at Fermilab. The exact time of this ribbon cutting has not been decided.

For those who will be unable to attend in person, but still wish to participate, a zoom will be provided (upon registration).

There is no registration fee for this workshop. Talks will be invite-only. Abstracts can be submitted to present a poster at the reception.

Scientific Organizing Committee:

Daniel Baxter, FNAL/NU (SOC chair, QSC)

Laura Cardani, INFN (SQMS)

Jon Cripe, LPS

Jonathan DuBois, LPS

Farah Fahim, FNAL (QSC)

Enectali Figueroa-Feliciano, NU/FNAL (QSC)

Anna Grassellino, FNAL/NU (director, SQMS)

Andrew Houck, Princeton (director, C2QA)

Travis Humble, ORNL/UTK (director, QSC)

Andrew Kubik, SNOLAB

Tanay Roy, FNAL (SQMS)

Brent VanDevender, PNNL/UW (C2QA)

 

    

Thursday, 30 May

08:00 → 09:00 Day 1: Welcome & Registration

09:00 → 10:15 Day 1: Kick-Off

Convener: Daniel Baxter

09:00 Welcome and goals of the workshop

Speakers: Anna Grassellino (Fermilab), Jonathan Cripe (LPS), Travis Humble (Oak Ridge National Laboratory)

09:15 Plenary Overview

Speaker: Matthew McEwen

10:15 → 10:30 Coffee Break

10:30 → 12:00 Day 1: Current Strategies of the DOE NQI Centers

10:30 Summary of QSC Efforts

Speaker: Daniel Baxter

11:00 Summary of SQMS Efforts

Speaker: Tanay Roy (Fermilab)

11:30 Summary of C2QA Efforts

Speaker: Brent A. VanDevender (Pacific Northwest National Laboratory)

11:45 Discussion

12:00 → 13:00 Lunch (provided)

13:00 → 15:15 Day 1: Tools and Current Strategies

13:00 Muon tagging using Kinetic Inductance Detectors

Ionizing radiation, particularly environmental radioactivity and cosmic-ray muons, pose significant challenges to the coherence and reliability of superconducting quantum processors. In this talk, I will introduce a novel approach to mitigate the detrimental effects of atmospheric muons on arrays of superconducting qubits. Our strategy involves equipping a superconducting quantum processor with an active muon veto system designed to tag and veto operations following a muon interaction within the chip. I will outline the concept, design, and technology behind the muon veto detector, with a focus on achieving high detection efficiency and negligible dead-time. Leveraging insights from Particle Physics experiments and the INFN CALDER project, we propose a cryogenic muon veto based on Kinetic Inductance Detectors (KIDs) technology, tightly integrated with the superconducting quantum chip. Results from Monte Carlo simulations and a preliminary design of the muon veto will be presented. By demonstrating the effectiveness of this strategy, we aim to significantly reduce correlated errors, enhancing both coherence and frequency stability of superconducting qubits. We plan to test our prototype using a high-performing quantum chip provided by the Superconducting Quantum Materials and Systems (SQMS) Center, with the objective of validating its performance and applicability in practical quantum computing scenarios.

Speaker: Ambra Mariani (INFN - Sezione di Roma)

13:15 External muon tagging

Speaker: Patrick Harrington

13:30 Phonon Trapping

Speaker: Britton Plourde

13:45 Phonon Funneling (SQUATs)

Speaker: Noah Kurinsky (SLAC National Laboratory)

14:00 IR Mitigation

Speaker: Yen-Yung Chang (UC Berkeley)

14:15 Theory Perspectives

Speaker: Gianluigi Catelani

14:30 G4CMP Workshop Summary

15:00 Discussion

15:15 → 15:30 Coffee Break

15:30 → 17:00 Day 1: Panel of Experts

Convener: Joseph Formaggio (MIT)

15:30 Panel

Speakers: Andrew Cleland, John Martinis, Lara Faoro , Laura Cardani, Ted Thorbeck

17:00 → 19:00 Day 1: Poster Reception

Friday, 31 May

09:00 → 10:20 Day 2: Overlapping Problems & Synergies

09:00 Quasiparticle poisoning in topological qubits

Speaker: Torsten Karzig

09:20 Quantum Dots

Speaker: Mark Eriksson

09:40 TBD

10:00 Microelectronics

Speaker: Farah Fahim (FERMILAB)

10:20 → 10:30 Coffee Break

10:30 → 12:45 Day 2: Facility Overview (Rapid Fire)

10:30 Fermilab Underground Facilities (QUIET & NEXUS)

Speaker: Enectali Figueroa-Feliciano (Northwestern University)

10:45 PNNL Underground Facilities

Speaker: Ben Loer (Pacific Northwest National Laboratory)

11:00 SNOLAB Underground Facilities

Speaker: Andrew Kubik

11:15 LNGS Underground Facilities

Speaker: Stefano Pirro

11:30 IFAE Underground Facilities

Speaker: Elia Bertoldo

11:45 Boulby Underground Facilities

Speaker: Ashlea Kemp (RHUL)

12:00 Australia Underground Facilities

Speaker: Ben McAllister (ARC Centre of Excellence for Engineered Quantum Systems, School of Physics, University of Western Australia)

12:15 The Colorado Shallow Underground Research Facility at the Edgar Experimental Mine

Speaker: Dakota Keblbeck

12:30 An Electron Linear Accelerator for On-Demand Qubit Irradiation

Speaker: Tom McJunkin

12:45 → 13:00 Day 2: Group Photo

13:00 → 14:00 Lunch

14:00 → 16:00 Lab Tours

Tours of FNAL's QIS facilities, including the QUIET Facility, SQMS Garage, and SiDet.

16:00 → 17:00 Day 2: Farewell Discussion