What's the deal? S-Transistors, a Finnish startup spun out of VTT Technical Research Centre of Finland, has raised €2.6 million in pre-seed funding to build a new class of integrated circuits based on superconducting transistors. Lifeline Ventures led the round, joined by an angel investor. What's the endgame? The company is developing what it calls quantum motherboards — hardware to orchestrate cryogenically cooled quantum computers more efficiently. Its superconducting transistors combine the computational power of transistors with the ultra-low power dissipation of superconductors. Why now? Today's superconducting quantum computers rely on multiple bulky cables per qubit, running from inside the cryostat out to room-temperature electronics. That approach is power-hungry and hard to scale, and unlocking the platform's potential will require machines with hundreds of thousands of qubits. What's the technology? S-Transistors' technology, already available at wafer scale, aims to bring classical control and interface hardware down into the cryostat, next to the quantum chip. "Superconducting transistors are exactly that missing piece of hardware for large-scale, energy-efficient quantum computing," said co-founder and chief executive officer Heorhii Bohuslavskyi. What's the money for? The startup will develop product prototypes for cryogenic signal control, set up its own cryogenic laboratory, and establish a manufacturing pilot line. It also plans to grow the team. Beyond quantum computing, the technology has potential applications in energy-efficient classical computing and spacecraft electronics. The signal: Cryogenic quantum computers are seen as among the most promising platforms for scaling, but they hit a hard wall when control electronics stay at room temperature. Moving that hardware into the cold — and making it energy-efficient enough to run there — is emerging as a central engineering challenge for the field. Read more: news.cision.com Image credit: Generated with Gemini