ML4Q

Matter and Light for Quantum Computing

 

About

“Matter and Light for Quantum Computing” (ML4Q) is a Cluster of Excellence established in 2019 within the Excellence Strategy of the German federal and state governments. In ML4Q, scientists from the universities of CologneAachen and Bonn as well as Forschungszentrum Jülich come together to spearhead quantum computing research.

Using the principles of quantum mechanics, it is the long-term goal of ML4Q to develop new computing and networking architectures with a power beyond anything classically imaginable. Quantum computers could be powerful tools in key areas such as materials design, pharmaceutics, or artificial intelligence. Quantum communication could be made effectively secure. ML4Q builds on the complementary expertise in the three key research fields of solid-state physics, quantum optics, and quantum information science to develop the best hardware platform for quantum information technology, and provide comprehensive blueprints for a functional quantum information network. 

Goal

The long-term goal of the cluster is to realize network and processing architectures protected by error correction protocols and eventually connected to a quantum version of the internet. This goal defines a hierarchy of challenges, both in fundamental science and in technology, which must be overcome at early and intermediate stages.

ML4Q at a Glance

Science

Combined expertise in key disciplines of quantum computation

Equity, Diversity and Inclusion

Creating an inclusive work environment

People & Institutions

View our members

Outreach

Sharing the passion for quantum physics

Early Career

Training the next generation to pull quantum computation past the application threshold

News

Publications, events and more

Science Highlights

Apr 29 2026

Resource-Theoretical Unification of Mpemba Effects: Classical and Quantum

Resource-Theoretical Unification of Mpemba Effects: Classical and Quantum   The Mpemba effect, where a hotter system cools...
Mar 02 2026

Demonstration of measurement-free universal logical quantum computation

Demonstration of measurement-free universal logical quantum computation ​In a recent work published in Nature Communications,...
Jan 29 2026

ERC Proof of Concept Grant for innovation in low-temperature microscopy

ERC Proof of Concept Grant for innovation in low-temperature microscopy ​European Research Council awards physicist Daqing Wang...
Dec 12 2025

Synergy Prize 2025

TRA Matter Awards First-Ever €50,000 Synergy Prize to MolecularQubit ProjectThe University of Bonn is backing interdisciplinary...
Dec 08 2025

From PhD into the quantum industry: Michaela Eichinger on ML4Q&A

In this episode of ML4Q&A, Michaela Eichinger, Product Solutions Physicist at Quantum Machines and quantum content creator,...
Nov 11 2025

Coherent Interaction of 2⁢? and 1⁢? Exciton States in Transition-Metal Dichalcogenide Monolayers

Coherent Interaction of 2⁢? and 1⁢? Exciton States in Transition-Metal Dichalcogenide MonolayersIn a new study, scientists at...
Oct 20 2025

Thermodynamics and state preparation in a two-state system of light

Thermodynamics and state preparation in a two-state system of light   The manuscript reports on the observation of a...
Oct 20 2025

Anticoncentration in Clifford Circuits and Beyond: From Random Tensor Networks to Pseudomagic States

Anticoncentration in Clifford Circuits and Beyond: From Random Tensor Networks to Pseudomagic States   A central question...
Jul 28 2025

Next Stop ML4Q with Neil Dowling

In "Next stop ML4Q" scientists who newly joined ML4Q talk about their journey in science and academia and how they joined ML4Q....
Jul 07 2025

Soapbox Science 2025

Soapbox Science 2025 in the heart of DüsseldorfOn 28th of June the Düsseldorf Rheinpromenade transformed into a vibrant space...

OPPORTUNITIES FOR YOUNG SCIENTISTS

Attracting and retaining the best young talents in the field by offering competitive career opportunities is a top priority for ML4Q. 

• Undergraduate grants 

• Undergraduate research internship 

• Independence grants for postdoctoral researchers 

• New tenure-track professorships 

• ML4Q Research School with cluster-specific courses, e.g. “Platforms for Quantum Technologies” for Master students 

• Master program for Quantum Technology in Aachen as well as specialized lectures on quantum technologies in Bonn and Cologne

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Professors

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PHD Students

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Female Scientists