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SUMMARY:Exploring Quantum Hall Edge Channels in Graphene as a Path to Topo
 logical Superconductivity
DTSTART:20250414T161500
DTEND:20250414T171500
DTSTAMP:20260414T234810Z
UID:e3f2a097187516893bd3aea440f23e96f16ca205825183612a6344dc
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Benjamin Sacépé\, Néel Institute\, CNRS Grenoble. http
 s://sacepe-quest.neel.cnrs.fr/\nTopological superconductivity has attracte
 d considerable attention due to its great promise for fault-tolerant quant
 um computing. Conventional approaches rely on intricate hybrid systems com
 bining topological insulators and superconductors\, requiring precise mate
 rial engineering and fine-tuned conditions\, yet a clear experimental demo
 nstration remains absent to this day. In this colloquium\, I will introduc
 e a novel type of topological insulator state emerging from the physics of
  the quantum Hall effect. This state leverages the unique properties of th
 e zeroth Landau level in graphene—a remarkable\, strongly interacting fl
 at band where electron-electron interactions give rise to diverse broken-s
 ymmetry phases\, characterized by distinct topological and lattice-scale o
 rders. These phases can be identified through transport measurements [1] a
 nd directly visualized using scanning tunneling spectroscopy [2]. I will a
 lso demonstrate how superconductivity can be induced in quantum Hall edge 
 channels to create robust Josephson junctions\, despite the presence of a 
 strong perpendicular magnetic field [3]\, thus opening a new path toward t
 he realization of topological superconductivity in quantum Hall Josephson 
 junctions.\n\n[1] L. Veyrat et al. Science 367\, 781 (2020)\n[2] A. Coissa
 rd et al. Nature 605\, 51 (2022)\n[3] H. Vignaud et al. Nature 624\, 545 (
 2023)\n 
LOCATION:CM 1 5 https://plan.epfl.ch/?room==CM%201%205 https://epfl.zoom.u
 s/j/64905394203
STATUS:CONFIRMED
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