SKM 2021 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 8: Poster Session II

HL 8.9: Poster

Dienstag, 28. September 2021, 10:00–13:00, P

A Master Equation centered foundation for an open-source project for quantitative simulation of the transition dynamics in finite state quantum systems. — •Arn Baudzus, Andreas Wieck, and Arne Ludwig — Angewandte Festkörperphysik, Ruhr-Universität Bochum, Universitätsstraße 150, D-44780 Bochum

We present a novel approach and status on the implementation of a program to quantitatively simulate the electronic, photonic and phononic behaviour of a quantum dot that is embedded in a semiconductor device. Our main aim is to start an open-source project, everyone can expand and contribute to.

We outline a theoretical framework that is developed to break this complex system down into modules that can be treated one at a time.

The framework is centered around the generation and solution of master equations with constant or time dependent coeffitients. The coeffitients in the master equation and the information of the relevant states can be calculated by different programs, each governing another kind of interaction.

We use a graph data structure to manage the system states and interface with the other program parts in an intuitive way. A C++ implementation for this structure has been developed.

At the moment we are mainly focusing on the simulation of electron tunneling dynamics between a single quantum dot and a two dimensional electron gas. We illustrate how the tunnel dynamics can be simulated using our framework.