QuEnG Seminar, Mathematics - Landau-Zener-Stueckelberg Physics with a Singular Continuum of States

on the April 3, 2019

At 2:00pm
For the next Quantum Engineering Grenoble Seminar || Mathematics we are pleased to welcome Denis Basko from the Laboratoire de Physique et Modélisation des Milieux Condensés (LPMMC), who will talk on Landau-Zener-Stueckelberg physics with a singular continuum of density of states.
Abstract
I will discuss the dynamical quantum problem of a driven discrete energy level coupled to a semi-infinite continuum whose density of states has a square-root-type singularity, such as states of a free particle in one dimension or quasiparticle states in a BCS superconductor. The system dynamics is strongly affected by the quantum-mechanical repulsion between the discrete level and the singularity, which gives rise to a bound state, suppresses the decay into the continuum, and can produce Stueckelberg oscillations. This quantum coherence effect may limit the performance of mesoscopic superconducting devices, such as the quantum electron turnstile.


Published on April 7, 2019

Practical informations

Location


Institut Joseph Fourier (UJF)
Room 4, Ground Floor
100 Rue des Mathématiques Domaine Universitaire, 38610 Saint-Martin-d'Hères