Minimal Excitations in the Fractional Quantum Hall Regime

Jérôme Rech (1, 2) , Dario Ferraro (1) , Thibaut Jonckheere (1) , Luca Vannucci (3, 4) , Maura Sassetti (3, 4) , Thierry Martin (1)

1 CPT - Centre de Physique Théorique - UMR 7332
2 CPT - E6 Nanophysique
3 UniGe - Università degli studi di Genova = University of Genoa
4 CNR SPIN

We study the minimal excitations of fractional quantum Hall edges, extending the notion of levitons to interacting systems. Using both perturbative and exact calculations, we show that they arise in response to a Lorentzian potential with quantized flux. They carry an integer charge, thus involving several Laughlin quasiparticles, and leave a Poissonian signature in a Hanbury Brown–Twiss partition noise measurement at low transparency. This makes them readily accessible experimentally, ultimately offering the opportunity to study real-time transport of Abelian and non-Abelian excitations.

Domaines: Physique [physics]

Jérôme Rech, Dario Ferraro, Thibaut Jonckheere, Luca Vannucci, Maura Sassetti, et al.. Minimal Excitations in the Fractional Quantum Hall Regime. Physical Review Letters, 2017, 118 (7), pp.076801. ⟨10.1103/PhysRevLett.118.076801⟩. ⟨hal-01498180⟩