Device-independent quantum cryptography promises unprecedented security, but it is regarded as a theorist's dream and an experimentalist's nightmare. A new mathematical tool has now pushed its experimental demonstration much closer to reality.
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Ekert, A. The power of independence. Nature Phys 14, 114–115 (2018). https://doi.org/10.1038/nphys4346
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DOI: https://doi.org/10.1038/nphys4346
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