nextnano Lab is an R&D company created in 2021 to develop new simulation tools for quantum technologies. It is located in the Grenoble metropolitan area, France.

nextnano Lab works on the development of products which are commercialized by nextnano GmbH (see www.nextnano.com). In particular nextnano Lab works on the development of the nextnano.NEGF software.


The creation of nextnano Lab is an outcome of the EU project FLASH (Far-infrared Lasers Assembled using Silicon Heterostructures, a collaborative project funded by the European Commission under the H2020 program, 2017-2021). The goal of this project was the development of a room-temperature terahertz (THz) laser integrated on Silicon. Thomas Grange was working in this project on the modeling and simulation of quantum cascade lasers (QCLs) using non-equilibrium Green’s functions, in order to predict the behavior of SiGe THz QCLs. At the end of this EU project, Thomas Grange and nextnano holding GmbH jointly created the simplified stock company nextnano Lab SAS. Thomas is now Chairman and Research & Development Director of nextnano Lab.


Dr. Thomas Grange. Thomas is the founder and Research & Development Director of nextnano Lab.

Thomas is an expert in modeling quantum transport and dynamics using the non-equilibrium Green’s functions method and on the theory of scattering processes in semiconductor heterostructures.

Before founding nextnano Lab SAS, Thomas was working within the EU project FLASH at nextnano GmbH (2017-2021) where he developed quantum cascade laser modeling using the non-equilibrium Green’s function method.

Thomas was born in France and studied Physics at the École normale supérieure de Lyon (ENS Lyon) and at the École normale supérieure (ENS), Paris. His PhD work was on the theory of electron-phonon interaction, polaron formation and dynamics in quantum dots in the group of Robson Ferreira and Gérald Bastard at the ENS. He then joined a the group of Peter Vogl at the Walter Schottky Institute of the Technische Universität München (Germany) as a Humboldt Research Fellow, where he worked on the modeling of transport in quantum cascade lasers and nanowire heterostructures (2009-2013). Between 2013 and 2017, he was working in the group of Alexia Auffèves at Institut Néel (CNRS) in Grenoble (France) on modeling single-photon emission from quantum dots and nitrogen-vacancy centers in diamond.

Legal notice

Company name

Legal form







Corporate purpose

nextnano Lab

SAS (société par actions simplifiée)
au capital de 10 000 €

RCS Grenoble 900 747 148

900 747 148 00014

FR33 900 747 148

12 chemin des prunelles
38700 Corenc

Thomas Grange (président)

info [at] nextnano-lab.com

Research and development, in particular in theoretical and numerical physics, in quantum physics, and in solid-state physics; the design, manufacture and marketing of scientific software, in particular in the fields of quantum technologies, semiconductors, nanotechnologies, nano-electronics, and optoelectronics; all consultancy and related services.