Sparrow Quantum, a provider of photonic quantum chips, has secured €21.5 million ($24 million) in series A funding. Building on a €4.1 million seed round in 2023, the investment will help the company accelerate R&D, expand chip production, and bring its next-generation quantum chips to market. The company’s technology platform stems from research conducted by founder Peter Lodahl at the Niels Bohr Institute in Copenhagen. The work laid the foundation for the company’s flagship product Sparrow Core — an on-chip deterministic single-photon source aimed to help scale photonic quantum computing by generating photons reliably on demand. Sparrow Quantum’s integrated 3 × 3-mm chip is made from indium arsenide/gallium arsenide quantum dot structures embedded in photonic crystal waveguides. The chip is sectioned into an array of structures engineered for emitting highly coherent single photons at specific wavelengths between 920 and 980 nm. The company is part of the Eurostars project SupremeQ and is a partner on ORCA Computing’s Asteroidea project under the UK Quantum Testbed umbrella.