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Quandela and Welinq Join Forces to Create Custom Quantum Interconnects for Photonic Quantum Computing

Quandela the European leader in photonic quantum computing, and Welinq, a leading quantum networking company, proudly announce a transformative partnership for the quantum industry. This collaboration combines Quandela’s expertise in photonic quantum computing with Welinq’s pioneering full-stack quantum interconnects technology, to provide custom quantum links for photonic quantum computers, setting new industry standards and paving…

Quandela the European leader in photonic quantum computing, and Welinq, a leading quantum networking company, proudly announce a transformative partnership for the quantum industry. This collaboration combines Quandela’s expertise in photonic quantum computing with Welinq’s pioneering full-stack quantum interconnects technology, to provide custom quantum links for photonic quantum computers, setting new industry standards and paving the way for clusters of interconnected and error-corrected photonic quantum computers.

 Advancing QPU scaling

To achieve all the promises of quantum computing’s powers, Quantum Processing Units (QPUs) will need to execute algorithms across vast numbers of qubits, this making error correction even more important. In joining forces, Welinq’s state-of-the-art quantum interconnects combined with Quandela’s quantum processors, will support fault-tolerant computing and the expansion of comprehensive quantum networks, beyond the capabilities of a single chip.

This strategic partnership with Welinq marks a significant milestone in our quest to scale photonic quantum computing. By combining Quandela’s expertise in photonic quantum processors, with Welinq’s cutting-edge quantum interconnect technology, we’re laying the groundwork for clusters of interconnected, error-corrected photonic quantum computers. This collaboration puts us at the forefront of the quantum revolution, bringing us closer to enable the full potential of quantum computing via networked quantum computers.” Niccolo Somaschi, CEO and co-founder, Quandela

Welinq’s interconnect technology natively offers compatibility with all existing QPU architectures. We are delighted to partner with Quandela, a recognized leader in photonic quantum computing, to push the boundaries of our full-stack quantum interconnect technology and demonstrate the added value of our solution for scalability and error correction.” Tom Darras, CEO and co-founder, Welinq

Tom Darras, CEO and co-founder, Welinq and Niccolo Somaschi, CEO & co-founder, Quandela

Importance of Photonic QPUs and Quantum Interconnects

Photonic QPUs, such as those developed by Quandela, offer significant advantages due to their inherent modularity. This modular design  enables computing scalability, as additional qubits can be seamlessly integrated into the system. As the carriers of quantum information, photons provide high-speed data transmission with minimal interference, making photonic QPUs highly efficient and reliable for complex quantum computations. Scaling to a large number of qubits will involve the interconnection of multiple independent photonic QPUs, a process that demands additional technological advancements and represents a huge technological challenge in itself.

Full-stack quantum interconnects based on efficient quantum memories are crucial for linking multiple QPUs regardless of the qubit modality. These interconnects enhance the overall computational power by allowing quantum information to be transferred between different processors with high fidelity and low latency. Welinq’s state-of-the-art quantum memories ensure that the integrity of quantum information is maintained during transmission, which is essential for the development of robust and scalable quantum networks.

Implementing a multi-pronged approach

This partnership is in line with Quandela and Welinq’s desire to work together to develop fully-fledged clusters of photonic quantum computers, which would have both hardware and algorithmic advantages over alternative approaches.

This technological partnership is in line with the announcement a few weeks ago of the AQADOC project, the world’s largest initiative dedicated to distributed quantum algorithms, led by Welinq and of which Quandela is a key member. The aim of this project is to explore energy-related use-cases and to develop the next generation of distributed software capabilities, capable of running on several QPUs interconnected by the hardware work to be carried out as part of this strategic partnership.

About Quandela

Quandela, entreprise leader dans le domaine du calcul quantique, propose des solutions de niveau industriel. Quandela conçoit, construit et fournit des systèmes quantiques prêts à l’emploi pour les datacenters, des processeurs quantiques accessibles via le cloud, et des services d’accès aux algorithmes.
Fondée en 2017 par la professeure Pascale Senellart, directrice de recherche au Centre de nanosciences et nanotechnologies (C2N) du CNRS, Niccolo Somaschi et Valérian Giesz, experts de renommée internationale en physique quantique, Quandela emploie plus de 100 collaborateurs de 20 nationalités différentes, en majorité des chercheurs et des ingénieurs en optique, algorithmes et sciences de l’information.
Quandela s’engage à rendre l’informatique quantique accessible à tous pour relever les défis industriels et sociétaux les plus complexes.
Pour en savoir plus : www.quandela.com

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Quandela, a leader in quantum computing, specializes in industry-grade quantum computing solutions. Quandela designs, builds, and supplies datacenter-ready quantum computing systems, cloud-accessible quantum processors, and algorithm with industrial value.
Founded in 2017 by Professor Pascale Senellart, Research Director at the Centre for Nanosciences and Nanotechnologies (C2N) at CNRS, Niccolo Somaschi and Valerian Giesz, internationally renowned experts in quantum physics, Quandela currently has over 100 employees from 20 different nationalities, mostly researchers and engineers in optical, algorithm and data science.
Quandela is committed to making advanced quantum computing accessible and beneficial for all, empowering innovators to solve the most complex industrial and societal challenges.

About Welinq

Welinq is a pioneering Quantum Networking company that develops and commercializes quantum links based on laser-cooled neutral atom quantum memories to interconnect quantum computers in order to drastically increase their computational power and to ensure their deployment in clusters on customer premises. Welinq is a spin-out from Sorbonne Université, CNRS and PSL-University, founded in 2022 by Tom Darras, Prof. Julien Laurat, Dr. Eleni Diamanti and Jean Lautier-Gaud.
To learn more about Welinq, visit www.welinq.eu

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[VIVATECH] AdvanThink and Quandela demonstrate the ability to integrate Quantum Artificial Intelligence into proven payment fraud detection models  

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Paris – Saclay, June 17, 2025 

AdvanThink, Europe’s leading expert in real-time payment fraud detection, and Quandela, a leader in quantum computing, have established a strategic partnership aimed at transforming the future of payment fraud prevention.  

The Promise: By leveraging the complementary strengths of AI and quantum computing, the two companies aim to develop high-performance fraud detection models designed for real-world deployment. These systems will be capable of identifying payment fraud faster and with greater accuracy than existing solutions.

Detecting payment fraud in real time remains one of today’s most significant technological, operational, and strategic challenges. In response to constantly evolving fraud techniques, AdvanThink has spent 35 years building strategic tools powered by artificial intelligence that continuously learn and adapt to emerging threats. In this ongoing race to improve performance, artificial intelligence has become an essential tool, capable of detecting subtle warning signs across large volumes of data with unprecedented precision and speed. 

Future requirements will be even more demanding. Fraud detection models will need to be faster, more accurate, more energy-efficient, and more resilient against increasingly sophisticated attacks. It is within this context that AdvanThink and Quandela have joined forces to explore the potential of quantum computing and push the boundaries of state-of-the-art fraud detection. 

The first phase of this partnership will focus on developing a proof of concept that demonstrates the value of integrating quantum machine learning algorithms into AdvanThink’s industrial pipelines.

“For 35 years, AdvanThink has placed technological innovation at the heart of its development strategy. Quantum AI holds a significant promise when it comes to fraud detection. It serves as a powerful catalyst for innovation in building the secure payment solutions of tomorrow – and financial institutions need to begin acknowledging this transformation today. We have already successfully integrated Quandela’s technology into an AdvanThink pipeline, meeting all the requirements of an industrial-grade system ready for deployment. This first demonstrator holds great potential for experts in fraud detection,” says Brice Perdrix, CEO of AdvanThink.

“Quandela has already developed a quantum machine learning model that enhances credit risk assessment. The algorithm also shows strong potential in payment fraud detection. Quandela’s partnership with AdvanThink facilitates the integration of this model into an industrial workflow and enables benchmarking against the best products on the market,” adds Niccolo Somaschi, co-founder and CEO of Quandela.

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MerLin Unveiled: The First Quantum Layer for Data Scientists, Optimized for NVIDIA Accelerated Computing 

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Launching at GTC Paris, MerLin democratizes quantum machine learning by integrating with classical AI tools—backed by GPU-accelerated performance 

Paris, France – June 11th – Today, Quandela announces MerLin, a groundbreaking quantum computing framework designed for and by AI data scientists. Set to debut at NVIDIA GTC Paris, MerLin redefines quantum machine learning (QML) with a GPU-first approach, enabling researchers to simulate and benchmark algorithms beyond the limits of today’s quantum hardware. 

Quantum Meets AI: A Collaborative Future 

MerLin positions itself as the “quantum layer for data scientists” – contrasting with other quantum machine learning tools that target quantum scientists. By abstracting quantum complexity into familiar workflows (e.g., PyTorch/scikit-learn integrations), MerLin empowers AI practitioners to prototype hybrid quantum-classical models in hours, not months. Early adopters – including teams from the Perceval Quest, and researchers from Mila, NYUAD’s QML Lab and Scaleway – are collaborating with us to leverage MerLin and bridge classical and quantum workflows. 

Quantum shouldn’t demand a PhD to use,” said Niccolo Somaschi, co-founder & CEO of Quandela. “MerLin gives data scientists a GPU-accelerated gateway to quantum advantage while ensuring their work remains compatible with real hardware today—and tomorrow. By integrating benchmarks and noise-aware validation, we’re addressing a critical gap: the lack of reproducible metrics in hybrid algorithm research.” 

Powerful simulation tools are essential to develop better algorithms and accelerate the path to broad quantum advantage”, said Sam Stanwyck, Group Product Manager for quantum computing at NVIDIA. “MerLin solves a critical ecosystem need by opening the door for the broader research community to develop with photonic quantum circuits.” 

Key Innovations 

  1. GPU-Optimized Simulators
  • Leveraging NVIDIA CUDA-Q, MerLin delivers high-performance simulation for photonic quantum circuits, enabling tests for hardware that doesn’t yet exist (e.g., 24+ qubit systems). 
  1. Benchmark-Driven Progress
  • MerLin establishes reproducible metrics for hybrid algorithms, addressing the “benchmarking gap” in QML research—where thousands of papers lack standardized comparisons. 
  • Integrated with Quandela Cloud, it enables immediate validation of GPU-optimized algorithms on real photonic hardware, studying noise impact and scalability. 
  • Targets pragmatic use cases like quantum-enhanced kNN, GANs, and variational algorithms—backed by hardware-aware compilation. 
  1. Photonic-First, Future-Proof
  • Designed for today’s photonic QPUs (e.g., Perceval-based systems) but architected to adapt to next-gen hardware. 
  • Features like dynamic circuit recompilation ensure code scalability across hardware generations. 

Who Uses MerLin? 

  • AI/ML Practitioners: Prototype quantum layers without rewriting classical pipelines. 
  • Quantum Researchers: Access photonic-specific tools (e.g., boson sampling) with GPU-accelerated simulation. 
  • Enterprises: Pilot hybrid quantum-AI workflows with clear ROI benchmarks. 

MerLin allowed us to adapt existing algorithms to a photonic-native format within a short timeframe. The platform offered useful comparative insights that contributed to our ongoing research and publication efforts”, said Dr. Louis Chen, an early user, Research Associate at the Quantum Centre of Imperial College London (Imperial QuEST) and participant in the most recent Perceval Quest.

Availability & Strategic Vision 

MerLin will be freely accessible to accelerate adoption, with enterprise tiers for advanced features. The roadmap includes: 

  • Q2 2025: Stable PyTorch/scikit-learn APIs. 
  • 2026+: Support for 24+ qubit photonic systems. 

Learn More: merlinquantum.ai 

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French-German cooperation advances Europe’s quantum computer Lucy

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WITTENSTEIN and Quandela underscore European innovative strength

Two leading technology companies from Germany and France are joining forces to help shape Europe’s future in quantum computing: attocube systems GmbH, a company of the WITTENSTEIN group and specialist in nanotechnology, and Quandela, a pioneer in photonic quantum computer technology. The companies have been working together on the development of the European quantum computer Lucy. Representatives of the owners, Management Board and senior management of the WITTENSTEIN group took advantage of a visit to Paris to meet with the Quandela team and assess the status of the joint project.

Lucy is no ordinary computer. It is based on light particles – known as photons – and belongs to a new generation of quantum computers that are opening up completely new possibilities in areas such as artificial intelligence, cyber security, and materials research. The quantum computer was commissioned by the European High Performance Computing Joint Undertaking (EuroHPC JU) following a competitive tender process won by the Quandela-attocube consortium.

The collaboration between Quandela and attocube demonstrates how European companies can work together to achieve technological excellence. While Quandela is developing the photonic quantum platform, attocube is supplying high-precision cryogenic systems—technology that generates the extremely low temperatures required for quantum processes.

The visit to France focused on technical progress and system integration. The participants discussed how quantum and classical computers can be combined even more effectively in the future—for example, for hybrid applications in AI or complex simulations.

“Lucy is more than a technical project – she is a symbol of European innovation,” said Dr. Bertram Hoffmann, CEO of WITTENSTEIN SE. Niccolo Somaschi, co-founder and CEO of Quandela, added: “Lucy stands for technological excellence and for the common goal of making Europe a world leader in quantum computing.”

Lucy is scheduled to go into operation later this year. It will be based at the French supercomputer center CEA TGCC, where it will serve as the cornerstone of a sovereign European quantum ecosystem.