Yuval Ronen - "Anyons in van der Waals materials"

May 26, 2026 Abstract: 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)