Toward metropolitan free-space quantum networks

Quantum communications have rapidly progressed toward practical, large-scale networks based on quantum key distributions that spearhead the process. Quantum key distribution systems typically include a sender "Alice," a receiver ...

Why are networks stable? Researchers solve a 50-year-old puzzle

A single species invades an ecosystem causing its collapse. A cyberattack on the power system causes a major breakdown. These types of events are always on our minds, yet they rarely result in such significant consequences. ...

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