Isentroniq Secures €7.5M to Break Quantum Computing’s Cryogenic Wiring Bottleneck

Quantum Computing Bottleneck: Cryogenic Wiring

Quantum computing holds promise for revolutionizing industries, but its growth is constrained by a major hardware challenge: the cryogenic wiring bottleneck.Superconducting qubit systems, which require extremely cold temperatures to operate, are limited by the heat and complexity introduced by current wiring solutions. This bottleneck restricts system sizes to a few hundred qubits, far short of the scale necessary for commercial breakthroughs.

Isentroniq’s €7.5 Million Funding Targets Scalability

On October 14, 2025, French quantum hardware startup Isentroniq announced it had secured €7.5 million in pre-seed funding led by Heartcore and joined by OVNI Capital, Kima Ventures, iXcore, Better Angle, Epsilon VC, Bpifrance, and the French National Research Agency (ANR) under the France 2030 program. The capital will drive the development of Isentroniq’s advanced cryo-interconnect products and expand its cross-disciplinary engineering team.Read Also: LuxQuanta Lands €8M Series A to Propel Quantum Cybersecurity Worldwide

Isentroniq’s Patented Cryo-Interconnect Technology

Isentroniq’s solution centers on a patented wiring technology designed to minimize heat and spatial constraints at the core of quantum computers. By combining smart design with novel materials and components, the startup aims to deliver an end-to-end, plug-and-play wiring solution that is quantum-verified and scalable. According to CEO Magnard, “none [of our competitors] provides a wiring solution that is end-to-end, quantum-verified, and truly resolves the scalability problem. We deliver all three.”

Industrial Partnerships and Team Expansion

The newly raised funds will enable Isentroniq to grow its engineering team from eight to twelve by the end of 2026, adding expertise in quantum, mechanical, RF, and software engineering. The company plans to operate under a fabless model—designing in-house and collaborating with specialized manufacturers for production. Partnerships with component suppliers are key to integrating best-in-class technology and accelerating industrial-scale deployment.

Market Impact and Industry Response

Isentroniq’s wiring innovation is projected to allow quantum computers to scale up from thousands to potentially millions of qubits, with the cost of a 1 million–qubit system estimated at just €50 million. This leap could make data center-grade quantum computing a reality, attracting future customers such as Alice & Bob, Google, IBM, AWS, IQM, and Rigetti.Read Also: Indian Scientists Pioneer Certified Quantum Randomness with Single Qubit BreakthroughThe announcement has generated strong interest among quantum hardware developers and investors. Many see the move as a pivotal step toward fault-tolerant, large-scale quantum computing, though experts caution that the challenge is multifaceted and will require advances across hardware and system integration.

“The wiring bottleneck is arguably the most urgent hardware challenge in quantum computing. Isentroniq’s approach could unlock the next generation of scalable quantum systems.”

What’s Next for Isentroniq?

Isentroniq expects to begin production and commercialization of its wiring technology within 18 months, with integration into pilot lines possible as early as 12 months. The company’s roadmap includes continued R&D, team growth, and strategic partnerships to ensure its solutions can meet the demands of future quantum computers.