About
Photon Spot is a California-based company that builds sub-Kelvin cryogenic systems and superconducting nanowire single-photon detectors (SNSPDs) for quantum technology. Founded in 2009 and headquartered in Monrovia, California, it offers detectors with ultralow dark counts, precise timing resolution, and high quantum efficiency, paired with cryogenic systems that operate below 1 Kelvin. Its products serve quantum communications, quantum computing, quantum sensing, and semiconductor diagnostics. The company's ultra-compact, ultra-low vibration cryogenic systems support time-resolved imaging for integrated circuit manufacturers and quantum technology researchers. Primary customers include research institutions, national laboratories, and companies doing quantum research and development. Backed by investors including the National Science Foundation, Photon Spot's single-photon detection technology is used in photonic quantum computing, quantum key distribution, and quantum metrology.
Quantum Specifications
| Quantum Focus | hardware |