Regensburg 2022 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 19: Materials and Devices for Quantum Technology 1

HL 19.11: Vortrag

Mittwoch, 7. September 2022, 12:45–13:00, H34

Device-Scale Modeling and Simulation of Solid State Spin-Qubit-Shuttles — •Lasse Ermoneit, Markus Kantner, and Thomas Koprucki — Weierstrass Institute for Applied Analysis and Stochastics (WIAS), 10117 Berlin, Germany

We develop a theoretical model and a numerical simulation framework for a spin-qubit shuttling device for coherent transfer of quantum information between remote arrays of gate-defined quantum dots. The goal is to provide a device-scale simulation environment that solves the Schrödinger wave packet propagation problem in the presence of specific disorder potentials inside the shuttling device. Time-dependent electrostatic potentials of the gate electrodes and perturbations are obtained as solutions of Poisson's equation. We present our modeling approach together with first simulations results and outline how methods of model order reduction and optimal control theory can be employed to find a solution that ensures a high transmission fidelity in the presence of dephasing.