Title:	Simulations of waveguide QED and other quantum networks
DNr:	NAISS 2025/5-490
Project Type:	NAISS Medium Compute
Principal Investigator:	Göran Johansson <goran.l.johansson@chalmers.se>
Affiliation:	Chalmers tekniska högskola
Duration:	2025-09-26 – 2026-10-01
Classification:	10302 10304
Keywords:

Abstract

The project focuses on waveguide quantum electrodynamics systems where the interaction between artificial atoms and an electromagnetic field propagating in a one-dimensional waveguide is studied. We aim to investigate the collective behavior of atoms in a one-dimensional waveguide driven by a coherent electromagnetic field, exploring photon scattering and atomic correlation dynamics by numerically simulating the stochastic Lindblad master equation and gathering photon detection statistics. Given that we envision experimental implementation using superconducting waveguides, the goal for the next period of the project is to extend the work to transmon systems while studying how anharmonicity, dephasing, and detuning affect the photon scattering dynamics. Furthermore, with additional researchers joining the project, we also plan to extend this work to a broader research area with a focus on preparing quantum states on a superconducting platform for quantum communication and error correction. We plan to continue numerically simulating the stochastic Lindblad master equation and gathering photon detection statistics. We plan to extend the work to transmon systems, with higher dimension, as well as to a broader research area.