William Witczak-Krempa, Université de Montréal

Research

Quantum criticality Quantum entanglement Quantum field theory Quantum phase transitions Spin-orbit coupling Superconductivity Topological phases Quantum Hall effect

Latest papers

Multiparty entanglement loops in quantum spin liquids
Nature Communications · 2026 · senior author
Entanglement microscopy and tomography in many-body systems.
Nature communications · 2025
Cornering the universal shape of fluctuations.
Nature communications · 2022 · senior author

All 3 publications

Latest funding

A new generation of hardware efficient superconducting qubits
NSERC · 2023 · Co-investigator
$545,000
Highly entangled quantum matter
NSERC · 2023 · Principal investigator
$118,000
Quantum Phase Transitions
NSERC · 2020 · Principal investigator
$375,000

All 7 grants and awards

3 publications.

01

Multiparty entanglement loops in quantum spin liquids

Lyu L, Chandorkar D, Kapoor S, Takei S, Sørensen ES, Witczak-Krempa W

Nature Communications20263 citationsSenior author

DOI: 10.1038/s41467-026-71113-8

02

Entanglement microscopy and tomography in many-body systems.

Wang TT, Song M, Lyu L, Witczak-Krempa W, Meng ZY

Nature communications2025

DOI: 10.1038/s41467-024-55354-z PMID: 39747005

03

Cornering the universal shape of fluctuations.

Estienne B, Stéphan JM, Witczak-Krempa W

Nature communications2022Senior author

DOI: 10.1038/s41467-021-27727-1 PMID: 35022397

A new generation of hardware efficient superconducting qubits

Co-investigatorNSERC2023Alliance Grants

Principal investigators: St-Jean, Philippe P

Keywords: advanced computing; machine learning; opoelectronics; photonics; physics; quantum computing; quantum optics; quantum phases of matter; topological computing; topological materials

$545,000

Highly entangled quantum matter

Principal investigatorNSERC2023Discovery Grants Program - Individual

Principal investigators: Witczak-Krempa, William

Keywords: quantum materials; quantum phase transitions; quantum criticality; quantum entanglement; topological phases; quantum hall effect; superconductivity; spin-orbit coupling; quantum information; quantum field theory

$118,000

Quantum Phase Transitions

Principal investigatorNSERC2020Canada Research Chairs

Principal investigators: Witczak-Krempa, William

Keywords: Quantum Phase Transitions; Quantum Criticality; ; Quantum Entanglement; Topological phases; ; Fractionalization; Spin-orbit Coupling; Transport; ; Response Functions; Superconductivity; Quantum ; Information; Quantum Spin ; Liquids; Quantum Field Theory; Entanglement Entropy; ; Conformal Field Theory; Anyons; Quantum Computation

$375,000

Dynamics and entanglement near quantum phase transitions

Principal investigatorNSERC2016Discovery Grants Program - Individual

Principal investigators: Witczak-Krempa, William

$224,000

Dynamics and entanglement near quantum phase transitions

Principal investigatorNSERC2015Canada Research Chairs

Principal investigators: Witczak-Krempa, William

$120,000

Dynamics and entanglement near quantum phase transitions

Principal investigatorNSERC2015Canada Research Chairs

Principal investigators: WitczakKrempa, William

$415,000

Dynamics And Entanglement Near Quantum Phase Transitions

Principal investigatorNSERC2015Canada Research Chairs

Principal investigators: Witczak-Krempa, William

$30,000

From CIHR, NSERC and SSHRC funding decisions: CIHR since 2008, NSERC since 1991 and SSHRC since 1998, including their latest published competition results.

Frequent collaborators

Erik Sorensen

Department of Physics & Astronomy

1 shared papers, latest 2026

Write to this professor

A short, specific email works best. This draft uses one of their recent papers; replace the parts in brackets with your own details before sending.

Applying for

Paper to mentionMention their NSERC grant from 2023

Subject: Prospective PhD student: Quantum criticality Dear Professor Witczak-Krempa, My name is [your name], and I am a [your current degree or role] at [your institution]. I am applying for a PhD position starting in [term and year]. I read your paper "Multiparty entanglement loops in quantum spin liquids" (2026), and it connects closely to my own work on [your research topic]. [One or two sentences on what you did and what you learned.] I also saw your NSERC-funded project "Highly entangled quantum matter" (2023), and I would be glad to contribute to work in that direction. Are you accepting new PhD students for [term and year]? I have attached my CV and transcripts, and I would be glad to talk at a time that suits you. Thank you for your time. Kind regards, [your name]