Quantum Device Stores Pulses of Light

Australian researchers have demonstrated a way of storing quantum pulses of light that could be used in an optical memory device, similar to the way computers store and retrieve digital information. The technology, developed by a team at the Australian National University (ANU), in Canberra, also has applications in quantum cryptography, a secure means of communication that utilises properties of light to encrypt information. Cryptography works if the information sender and receiver share a secret key

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