Berlin 2018 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 9: Quantum Dots, Quantum Wires, Point Contacts
TT 9.11: Vortrag
Montag, 12. März 2018, 12:30–12:45, HFT-FT 101
Crystallization of Levitons in the fractional quantum Hall regime — •Flavio Ronetti1,2, Luca Vannucci1, Dario Ferraro3, Jérôme Rech2, Thibaut Jonckheere2, Thierry Martin2, and Maura Sassetti1 — 1Università di Genova and CNR-SPIN, Via Dodecaneso 33, 16146, Genova, Italy. — 2Aix Marseille Univ, Université de Toulon, CNRS, CPT, Marseille, France. — 3Istituto Italiano di Tecnologia, Graphene Labs, Via Morego 30, I-16163 Genova, Italy
The emergence of self-organized regular patterns in optical solitons has been recently subject of intense investigation, as they promise to be exceptionally useful in quantum communication [1]. In the framework of electron quantum optics, a train of Lorentzian voltage pulses emerges as the solid state counter-part of optical solitons, namely robust ballistically propagating wave-packets carrying an integer number q of electrons called Levitons [2,3]. Using a periodic train of Levitons, we investigate the charge density backscattered off a quantum point contact in the fractional quantum Hall regime, finding a self-organized and regular pattern of peaks and valleys[4]. We demonstrate that the predicted features manifest themselves as unexpected additional dips in the well-studied Hong-Ou-Mandel noise.
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