Théorique, numérique
Ines Safi, Laboratoire de Physique des Solides, Université Paris - Saclay. Co-director: Pascal Degiovanni (ENS Lyon). The proposal lies within the ANR project « QuSig4QuSense » associating he experimental group of Gwendal Fève at ENS Paris. Electronic quantum optics is a novel research field which has emerged in the last years by studying quantum electronic transport in its ultimate form, through manipulating single coherent electronic excitations in chiral edge states of the quantum Hall effect (QHE), which are electronic analogues to optic fibers in photonics. Quantum point contacts (QPCs) formed by bringing closer two opposite chiral edges are the analogous of beam splitters under control. Quite often, “light”, thus electromagnetic fields, is used to probe properties of “matter”. Inversely, our project consists in using electrons to probe the quantum states of electromagnetic fields and developing novel quantum sensors for the latter. This is the idea of an “electron radar “, at the heart of the QuSig4QuSense project. An important part of the project consists into manipulating and characterizing microwave quantum fields within edge states of the QHE, thus to propose controlled on-chip sources of quantum radiation. In the HE, this radiation is associated with charge oscillation modes called « plasmons » whose propagation determines electrical current at finite frequency. The internship and thesis aim to use these plasmonic modes to perform microwave quantum optics.