Berlin 2024 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 92: Quantum Dynamics, Decoherence and Quantum Information (joint session DY/TT)

TT 92.2: Vortrag

Freitag, 22. März 2024, 11:00–11:15, A 151

Information currents in disordered region — •Nicolas Bauer and Björn Trauzettel — Julius Maximilians Universität Würzburg, Würzburg, Germany

The information lattice is a tool to organize quantum information into different scales and allows the definition of local information and information currents. Hence, it allows to study the flow of information in various systems. We apply the information lattice to a hybrid quench-probe setup, where one part of the system undergoes a quench while another part remains inert. The quench creates a propagating entanglement wave packet, visible in the information lattice, and we study how a disordered region in the probe affects this information current, i.e. scattering and localization of information within the disordered region. In addition, the hybrid setup has an energy selective coupling feature, which allows us to analyze and compare the scattering/localization properties of e.g. fermions at varying energy levels or topological excitations like Majorana zero modes.

Keywords: information lattice; information current; disordered system; quantum quench