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People

Meet the group

The people behind the quantum workshop.

We explore two-dimensional systems to discover and understand their collective and topological behavior.

Lab dinner · September 2025
Lab dinner · September 2025
Working together

Current team

Sergio de la Barrera

Sergio de la Barrera

Assistant Professor

Sergio explores what kinds of quantum order can exist in two dimensions, and how stacking, twisting and coupling between layers can use the third dimension to engineer new order and phenomena in 2D systems.

Erica Nielsen

Erica Nielsen

PhD Candidate

Erica built our ambient scanning van der Waals microscope. She measures twist-dependent vertical transport between 2D layers and develops tunneling spectroscopy for 2D and moiré structures.

BASc Engineering Physics, Queens University
Eames Donovan

Eames Donovan

PhD Candidate

Eames studies how screening shapes correlated states in graphene multilayers. He uses high-permittivity dielectrics and other screening approaches, together with electronic compressibility methods he developed.

BSc Physics, University of Toronto
Sam Paudel

Sam Paudel

PhD Student

Sam studies twisted graphene multilayers, investigating how twist angle and symmetry create flat electronic bands with distinctive topological properties.

BSc Physics, University of Toronto
Tianyu Liang

Tianyu Liang

PhD Student

Tianyu studies twisted semiconductor multilayers, exploring how these layered systems can support superconductivity and other correlated electronic states.

BSc Physics, Peking University
Jamie Talmor

Jamie Talmor

PhD Student

Jamie is building a cryogenic scanning van der Waals microscope for tunneling spectroscopy and in situ twist control of moiré structures at millikelvin temperatures.

BA Physics, Oberlin College
Andrea Barbieri

Andrea Barbieri

Undergraduate Student

Andrea investigates superconductivity in few-layer rhombohedral graphene, focusing on the collective electronic states that arise in these layered systems.

CQIQC Undergraduate Research Fellow (x2) + PHY479Y

Elizabeth Ormsby

Undergraduate Student

Elizabeth studies pressure control of bilayer graphene’s layer spacing and band gap. She builds piston-cell devices and calibrates hydrostatic pressure using ruby fluorescence.

CQIQC Undergraduate Research Fellow + PHY479Y
16 former members

Alumni

Former members have gone on to graduate study and work in research and industry.

Emma Creelman

Emma Creelman

NSERC USRA

Anthony Kondi

PHY379Y
Hasnain Koser

Hasnain Koser

Work Study Program + PHY479Y

Daniel Slepouchkine

University of Toronto Excellence Award (UTEA)

Chrysanthemum Xu

Research Opportunities Program (ROP)

Natasha Karolewska

SURF Award
Charles Cai

Charles Cai

NSERC USRA + UTEA
Next step Graduate student at McMaster University
Ivan Ovchinnikov

Ivan Ovchinnikov

PHY479 Undergraduate Research Course
Next step Graduate student at the University of Toronto

Tanmay Grover

PHY479 Undergraduate Research Course
Next step Graduate student at EPFL

Hang Lyu

PHY379 Undergraduate Research Course
Zachary Ireland

Zachary Ireland

PHY379 Undergraduate Research Course

Nicco Spano

M.Sc. in Physics
Next step Field Service Systems/Applications Engineer at Bruker for Micron
Allen Kasum

Allen Kasum

PHY479 Undergraduate Research Course
Next step Graduate student at the University of Toronto

Angela Deng

Engineering Science Research Opportunity Program (ESROP)

Peter Ye

Physics Summer Student Program
Next step Graduate student at Rice University
Beyond the member list

Life in the lab

Eames measuring in the PPMS in Prof. Young-June Kim’s lab · November 2024
Eames measuring in the PPMS in Prof. Young-June Kim’s lab · November 2024
Andrea presenting his poster at Quantum Days 2026 in Victoria, BC · February 2026
Andrea presenting his poster at Quantum Days 2026 in Victoria, BC · February 2026
Eames and Erica making high-stakes decisions during group meeting · August 2026
Eames and Erica making high-stakes decisions during group meeting · August 2026
Pub night to celebrate our successful BlueFors installation · August 2025
Pub night to celebrate our successful BlueFors installation · August 2025
Study and research opportunities Explore opportunities