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Physicists create city-sized ultrasecure quantum network | Scientific American
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Physicists create city-sized ultrasecure quantum network | Scientific American

The need for a secure network is essential for military cyber defense. There has been a development over quantum cryptography to establish a fully encrypted network. Instead of building a quantum network in which nodes are physically connected to all the other nodes, the researchers created one with a central source that sends entangled photons. There are still issues that need to be reviewed like including distances larger than the span of a small city and researchers are evaluating using satellites to carry their central source of entangled photons.

Source: https://www.scientificamerican.com/article/physicists-create-city-sized-ultrasecure-quantum-network1/

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