Quantum Key Distribution with Integrated Photonics

Quantum computing’s rapid advancement threatens current cryptography, which relies on complex problems solvable by quantum computers. This necessitates the development of “quantum-safe” technologies for future network protection. Today’s data is also at risk from “harvest now, decrypt later” attacks, where encrypted messages are stored for decryption once quantum processors are available. This is especially concerning for long-term valuable information like financial records and medical data.

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Integrated photonic quantum technologies

Remarkable progress has been made in the development of hardware for quantum technologies. As a platform for quantum technologies, integrated photonics has enabled significant leaps for integrating many components, including programmable circuitry, photon sources and detectors. However, machines such as fault tolerant quantum computers appear to be a long way off for all platforms, including photonics.

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