In Episode 123 of Entangled Things, Patrick and Ciprian talk with Himadri Majumdar, Co-Founder and CEO of SemiQon, about scaling quantum with silicon spin qubits. Himadri shares how SemiQon is bridging research and industry, supporting academia, and advancing cryo-CMOS-compatible processors. The discussion covers the advantages of spin qubits (scalability, speed, and efficiency), as well as the challenges of improving fidelity. They also explore European quantum initiatives, internships, hybrid approaches, and workforce diversity. Looking ahead to SIQEW 2025, Himadri emphasizes that collaboration and action, not just vision, will drive quantum forward.

Himadri Majumdar is the Co-founder and CEO of SemiQon. SemiQon builds silicon-based quantum processors for the million-qubit era and delivers cryogenic CMOS chips for critical technologies. Prior to co-founding SemiQon he was the Program Manager for Quantum Technologies at VTT where he led both national and European strategic initiatives. His ambition is to see SemiQon, and quantum technology in general, becoming a Finnish and global success story through cooperation and strategic partnerships. Himadri is trained as an experimental physicist and has 20 years of experience in innovation and innovation management.

SemiQon’s mission is to realize the promise of quantum computing by delivering scalability through powerful, resilient, and cost-effective quantum processors. SemiQon’s technology builds upon decades of development and know-how from the semiconductor industry, making its quantum integrated circuits and other components commercially competitive and well-suited for mass-manufacturing. SemiQon’s world’s best cryogenically optimized CMOS has wide-ranging applications in critical technologies, including quantum, space and beyond.

In Episode 122 of Entangled Things, Patrick is joined by Dr. Marcus Doherty, Co-Founder and CTO of Quantum Brilliance. Together, they explore the frontier of quantum sensing and diamond-based quantum technologies, and examine how building diverse talent pools will shape the future of innovation in this field.

Dr. Marcus Doherty CSM is a scientist, educator, entrepreneur and soldier. As an entrepreneur, he is a co-founder and the Chief Scientific Officer of Quantum Brilliance Pty Ltd—the global company leading the development of quantum microprocessors based upon diamond that will make quantum computing ubiquitous. As a scientist and educator, he is the Head of the Diamond Quantum Science and Technology Laboratory at the Australian National University, and internationally recognised expert in the physics of defects in semiconductors. As an educator, he is the architect of various graduate courses related to quantum science, technology and industry. As a soldier, he currently serves as a Lieutenant Colonel within the Future Land Warfare Branch of Army Headquarters, where he leads the implementation of Army’s Quantum Technology Roadmap.

In Episode 121 of Entangled Things, Patrick and Ciprian are joined by István Szilveszter, software engineer at Equal1. Together, they dive into the evolving world of quantum computing frameworks, the importance of developing industry standards, and the challenges of making quantum more accessible. From lowering barriers to entry to shaping the future of how we build and collaborate in quantum technologies, this conversation explores what it takes to turn bold ideas into practical innovation.

István Szilveszter is a Software Engineer at Equal1, specializing in software frameworks and compilers for quantum computers. He began his career in 2014 at the silicon startup Movidius (later acquired by Intel), where he developed software frameworks and compilers for AI engines and became one of the architects of the Intel NPU compiler. In 2024, he joined Equal1 to bring his expertise in high-performance computing and compiler design to the next generation of quantum systems.