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Berlin 2018 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 9: Quantum Dots, Quantum Wires, Point Contacts

TT 9.11: Talk

Monday, March 12, 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 Sassetti11Università 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.
D. C. Daniel, et al. Nature Photonics 11, 671 (2017).
J. Keeling, et al., Phys. Rev. Lett. 97, 116403 (2006).
J. Dubois, et al., Nature (London) 502, 659 (2013).
F. Ronetti, et al., in preparation (2017).

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