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Quantifying how much quantum information can be eavesdropped

The most basic type of quantum information processing is quantum entanglement. Researchers have now provided a much finer characterization of the distributions of entanglement in multi-qubit systems than previously available. These findings can be used in quantum cryptography to estimate the quantity of information an eavesdropper can capture regarding the secret encryption key.

from Top Technology News -- ScienceDaily https://www.sciencedaily.com/releases/2019/01/190128101120.htm
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