Identification and Control of Neutral Anyons

Beyond fermions and bosons, an exotic class of particles—known as anyons—arises from the interplay of correlations and topology across the fascinating landscape of the fractional quantum hall effect (FQHE). Characterized by unique braiding statistics, anyons are fundamental to our understanding of fractional quantum statistics. In past decades, while intense research efforts have been devoted to investigating anyons that carry a fractional multiple of electronic charge, the concept of neutral anyons has largely remained unexplored. In this talk, I present a new approach to stabilize, identify, and control charge-neutral anyons in quantum Hall bilayer systems. By pairing quasiparticles and quasiholes of Laughlin states, we demonstrate that the resulting interlayer exciton also obeys fractional quantum statistics, manifesting as an anyonic dipole. Using layer-asymmetric field-effect doping, this anyonic dipole remains stable even at temperatures below the charge gap. Notably, we explore neutral anyons from the even-denominator FQHE states, which are likely described by non-Abelian wavefunctions. Our findings unlock a unique opportunity to stabilize neutral anyons with non-Abelian statistics, opening new pathways for exploring non-Abelian quantum particles.