Fiber Optics Ready for Quantum Era: First Single-Photon Source at 1 GHz Frequency Created

Modern quantum technologies are based on the physical properties of individual micro-particles. In optical quantum computing, quantum cryptography, and secure communication systems, the primary working unit is the photon—the fundamental quantum of the electromagnetic field. Optical systems attract engineers because photons interact very little with their environment, travel at the ultimate speed, and can carry quantum information at room temperature. However, a fundamental obstacle stands in the way of creating scalable optical processors and extended quantum networks: a shortage of reliable single-photon sources. Such devices require light with special physical properties that cannot be obtained using ordinary lighting sources or standard lasers. Macro shot of a nanochip and optical fiber, free interpretationAuthor: AI Copilot…