Domaines
Condensed matter
Low dimension physics
Nouveaux états électroniques de la matière corrélée
Topological materials, Quantum Transport, Cavity Quantum Electrodynamics
Nanophysics, nanophotonics, 2D materials and van der Waals heterostructures,, surface physicss, new electronic states of matter
Type de stage
Expérimental et théorique Description
In reduced dimensionality, particles coined “anyons” can evade the familiar division between fermions and bosons with a fractional exchange phase between 0 and pi, with applications to topological quantum computation. Early on, quasiparticles of the Fractional Quantum Hall regime were identified as anyon candidates, and their fractional statistics was experimentally established in a few pioneer experiments in the early 2020s. It has been suggested that their existence extends way beyond this restrictive framework, and that they emerge for instance in bidimensional ballistic electron systems with strong Coulomb interactions, resulting in electron charge and statistics fractionalization.
The goal of this internship is to follow this novel approach with quantum circuit tools, combining quantum point contacts, single electron physics at high charging energies and ballistic edge channels of the Integer quantum Hall regime. The student will learn a variety of techniques mastered in the team (ultrasensitive conductance and quantum shot noise measurements, quantum thermal transport, electron interferometry), in order to reveal the anyonic nature of the system’s excitations, and characterize their quantum coherence.
Contact
Olivier Maillet