Berlin 2018 – scientific programme

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MA: Fachverband Magnetismus

MA 29: Topological Insulators I (joint session TT/MA)

MA 29.1: Talk

Wednesday, March 14, 2018, 11:45–12:00, A 053

Towards universal Hong-Ou-Mandel correlations in topological insulators — •Andreas Bereczuk, Juan Diego Urbina, Cosimo Gorini, and Klaus Richter — Institut für Theoretische Physik, Universität Regensburg, Germany

The quantum-classical transition of the transmission probability for two fermions propagating through a quantum point contact is a known manifestation of the celebrated Hong-Ou-Mandel (HOM) effect [1] in electron quantum optics [2]. As shown in [3], universal HOM correlations are expected by substituting the quantum point contact by a chaotic cavity in a mesoscopic regime [3], where universality appears due to universal correlations of the scattering matrix entries at different energies. Here we present an analytical and numerical study of these correlations and propose electron quantum optics with cavities as complex beam splitters and edge states as waveguides as a candidate to observe universal HOM correlations in topological insulators.
C. K. Hong, Z. Y. Ou, L. Mandel, PRL 59, 2044 (1987)
E. Bocquillon et al., Annalen der Physik 526, 1 (2014)
J. D. Urbina et al., Phys. Rev. Lett. 116, 100401 (2016)