Is the security of quantum cryptography guaranteed by the laws of physics?

March 12, 2018 Β· Declared Dead Β· πŸ› arXiv.org

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Authors Daniel J. Bernstein arXiv ID 1803.04520 Category quant-ph: Quantum Computing Cross-listed cs.CR Citations 13 Venue arXiv.org Last Checked 5 months ago
Abstract
It is often claimed that the security of quantum key distribution (QKD) is guaranteed by the laws of physics. However, this claim is content-free if the underlying theoretical definition of QKD is not actually compatible with the laws of physics. This paper observes that (1) the laws of physics pose serious obstacles to the security of QKD and (2) the same laws are ignored in all QKD "security proofs".
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