2019/03/31 by R. H. Rodriguez, F. D. Parmentier, D. Ferraro +7 · 4 citations
Chemistry · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Coulomb #Dissipation #Electron #Enhanced Data Rates for GSM Evolution #Quantum Hall effect #Quantum and electron transport phenomena #Quantum decoherence #Quasiparticle #Relaxation (psychology) #Topological Materials and Phenomena #cond-mat.mes-hall
paper · pdf · doi:10.1038/s41467-020-16331-4
published as Nature Communications volume 11, Article number: 2426 (2020) · Includes supplementary information
openalex publication_date 2020/05/15 · arxiv created 2020/05/16 · arxiv updated 2020/05/19 · openalex created_date 2020/05/21 · openalex updated_date 2026/08/05
The one-dimensional, chiral edge channels of the quantum Hall effect are a promising platform in which to implement electron quantum optics experiments; however, Coulomb interactions between edge channels are a major source of decoherence and energy relaxation. It is therefore of large interest to understand the range and limitations of the simple quantum electron optics picture. Here we confirm experimentally for the first time the predicted relaxation and revival of electrons injected at finite energy into an edge channel. The observed decay of the injected electrons is reproduced theoretically within a Tomonaga-Luttinger liquid framework, including an important dissipation towards external degrees of freedom. This gives us a quantitative empirical understanding of the strength of the interaction and the dissipation.