Photon Queue develops room-temperature, free-space quantum memory devices that store photons in optical loops using proprietary high-reflectivity mirrors and optical switches. Its approach delivers high efficiency and broad bandwidth without cryogenics, vacuum systems, or complex transduction, and is compatible with multiple wavelengths and quantum computing architectures. The company has deployed its first commercial devices at Sandia National Laboratories and the University of Maryland, reflecting early customer traction with national labs and research institutions. Founded in 2024 as a University of Illinois Urbana-Champaign spinout, Photon Queue is headquartered in Champaign, Illinois. The company serves applications in quantum computing, communications, and metrology and is working to scale product development, manufacturing, and customer deployments with the newly raised capital.

Total raised

$5M

Funding rounds

2

Latest round

Seed

Latest activity

Jul 2026