Episode 123: Himadri Majumdar on Scaling Quantum with Spin Qubits

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.