About
Single Quantum is a European maker of Superconducting Nanowire Single Photon Detectors (SNSPDs), founded in 2012 as a spin-off from TU Delft. Its flagship Eos system achieves over 90% detection efficiency, timing resolution below 15 picoseconds, count rates above 80 MHz, and dark count rates below 10 Hz. The company has installed photon detector systems across the United States, Europe, Canada, the UK, Japan, China, Australia, Israel, and South America, with SNSPDs now in more than 250 research laboratories worldwide. Its detectors support quantum key distribution, quantum computing readout, and quantum sensing applications that need the highest single-photon detection performance. In 2024 the company partnered with Toshiba to extend QKD range beyond 300km, and in a demonstration with Toshiba Europe, Single Quantum SNSPDs enabled QKD transmission over 300 km of optical fiber. In 2025, Single Quantum partnered with CERN's Quantum Technology Initiative and Qunnect for quantum networking experiments, with CERN integrating the detectors with White Rabbit time-synchronization technology to achieve sub-nanosecond alignment of distant nodes. In March 2025 the company opened its first international office in Stuttgart, Germany, led by Dr. Helmut Fedder, to serve its growing European customer base.
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