Quantum Internet Demonstrations Debut in Three Cities

image via New Scientist

May 20, 2024, 11:00 AM

• •Three separate research groups have demonstrated quantum entanglement over several kilometres of existing optical fibres in real urban areas.
• •The feat is a key step towards a future quantum internet, a network that could allow information to be exchanged while encoded in quantum states.
• •A quantum internet could enable any two users to establish almost unbreakable cryptographic keys to protect sensitive information.

Three separate research groups have demonstrated quantum entanglement — in which two or more objects are linked so that they contain the same information even if they are far apart — over several kilometres of existing optical fibres in real urban areas. The feat is a key step towards a future quantum internet, a network that could allow information to be exchanged while encoded in quantum states.

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