Anyons in van der Waals materials

Anyons are quasiparticles that obey exchange statistics distinct from those of fermions and bosons. Such particles can emerge in fractional quantum Hall (FQH) systems, providing a platform for exploring exotic topological phases of matter. In this talk, I will present our group’s recent efforts to investigate anyons in bilayer graphene-based van der Waals heterostructures. I will first briefly review the fractional quantum Hall phase space in bilayer graphene, which hosts a remarkably rich landscape of topological orders, including candidate non-Abelian states [1]. I will then give an overview of the interferometry experiments in our group, at both odd- and even-denominator filling factors, designed to probe the exchange statistics of Abelian and non-Abelian quasiparticles [2–4].

[1] R. Kumar, A. Haug, et al., Quarter- and half-filled quantum Hall states and their competing interactions in bilayer graphene, Nature Comm. (2025)

[2] J. Kim, H. Dev, et al., Aharonov–Bohm interference and statistical phase-jump evolution in fractional quantum Hall states in bilayer graphene, Nature Nano. (2024)

[3] J. Kim, H. Dev, et al., Aharonov-Bohm Interference in Even-Denominator Fractional Quantum Hall States, Nature (2026)

[4] J. Kim, A. Shaer, et al., Selective braiding of different anyons in the even-denominator fractional quantum Hall effect, arXiv:2603.11162 (2026)