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Quantum security systems like QKD and QRNG depend on advanced semiconductor technology - the chips and components that generate, detect, and process quantum signals. Single-photon avalanche photodiodes (SPADs) use semiconductor physics to detect individual photons - typically InGaAs for telecom wavelengths or Silicon for visible light. Quantum random number generators use semiconductor lasers and detectors. The challenge: manufacturing these requires extreme precision - 99.9% of photons might be lost or absorbed, so every component must be optimized. Temperature control is critical - detectors need cooling to reduce noise (random clicks when no photon arrives). Integration is advancing: researchers are putting lasers, modulators, and detectors on single silicon photonic chips. This "photonic integration" reduces costs, improves reliability, and enables compact quantum devices. The future: quantum systems on a chip, making quantum security as ubiquitous as regular networking equipment.
Quantum security was expensive because components were hand-built in labs. Semiconductor manufacturing techniques - the same processes making your smartphone chips - are being applied to quantum components. This drives costs down exponentially. Single-photon detectors that cost $50,000 in 2010 now cost $5,000. The next generation using silicon photonics might cost $500, making quantum security mainstream.
Semiconductor advances make quantum security practical and affordable. Integrated photonics enables QKD systems in standard rack-mount equipment instead of optical labs. Mass production brings quantum components to price points where enterprises can deploy them widely. For India's semiconductor manufacturing ambitions and QNu Labs' growth, domestic semiconductor capability in quantum components ensures supply chain security and competitive advantage.
Single-photon detector manufacturing for QKD systems, quantum random number generator chip design, integrated photonics for quantum systems, semiconductor lasers for quantum communications, explaining quantum system components, quantum device commercialization and scaling
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semiconductor technology, photonics, silicon photonics, single-photon avalanche photodiode, SPAD, InGaAs detector, quantum chip, integrated quantum photonics, quantum device manufacturing, semiconductor lasers, quantum hardware, photonic integrated circuit