Management Team

The management team of Orange Quantum Systems is dedicated to building quantum computers for real-world applications. With diverse professional backgrounds in physics, engineering and business, these well connected and entrepreneurial minds are committed to let Orange Quantum Systems play a leading role in the European quantum eco-system.


Thorsten received his Diploma (MSc equivalent) in Physics and PhD in Electrical Engineering from the Ruhr Universität Bochum, Germany. He has been involved in various projects in academia and the semiconductor industry, spanning from “beyond CMOS” device physics to Silicon Valley tech consultancy and EUV lithography. Since 2017, Thorsten has been responsible as a Senior Systems Engineer at TNO/QuTech for the organization of Quantum Inspire’s SPIN-2 quantum processor manufacturing effort, and for setting up Quantum Inspire’s Quantum Computing lab.

Thorsten Last
Director Development & Engineering

Garrelt obtained his MSc degree in Physics and his BSc in Dutch Law at the University of Utrecht in 1998. He finished his PDeng in Mechanical Engineering on Computational Mechanics at the Twente University in 2001. In 2007 he became a TNO Project Manager, and was responsible for several product development projects and research programs. From 2009 onwards he took Department Management responsibility for a group of 60 R&D professionals. In 2017 he started as a QuTech Roadmap Leader, responsible for managing the engineering activities.

Garrelt Alberts
Managing Director

During his PhD (cum laude) in the group of Prof. DiCarlo, Adriaan worked on control for superconducting quantum systems. He has developed new calibration and characterization protocols, as well as a new type of two-qubit gate, and made key contributions to the development of Quantum Infinity, a transmon-based full-stack quantum computer that preceded QuTech’s Quantum Inspire platform. Adriaan has worked closely with experts from all layers of the stack, which was formally recognized through the Zurich Instruments Pioneer Award, and resulted in award-winning papers. Before starting his PhD, Adriaan was on the executive board of a non-profit business consultancy.

Adriaan Rol
Director Research & Development

Amber moved from Belgium to the Netherlands in 2011 to study Aerospace Engineering at the TU Delft. He co-founded the automated coating company Qlayers BV in 2017, and the Aerospace Innovation Hub at the TU Delft in 2018. This gives him experience in bootstrapping high-tech companies. Working at TNO since 2019, he analyzed the market of quantum computing and has applied this insight to Orange Quantum Systems as a business developer.

Amber van Hauwermeiren
Business Development Lead

Kelvin trained as an aerospace engineer in NTU, Singapore, with working experience at the IIT Kanpur in India, and KAIST, in South Korea. With the Erasmus Mundus scholarship, he trained as an applied mathematician focusing on high performance computing at the TU Delft, The Netherlands, and FAU Erlangen, Germany. At TNO, he has contributed to projects within the energy, maritime, and defense sectors, and has contributed to the central controller firmware within Quantum Inspire. Considered as the all-rounder in terms of software and algorithm development.

Kelvin Loh
Software Engineering Lead

Arjan trained as an accountant at the university of applied science, Utrecht, with working experience as an accountant at Grant Thronton Netherlands and as a financial controller at Jadico Spices. In 2006 he started his own consultancy firm, where he acts as an independent financial expert, specialized in giving strategic financial advice at boardroom level.

Arjan Tersteeg
Financial Controller