Abstract
The first step in any quantum key distribution (QKD) protocol consists of sequences of measurements that produce correlated classical data. We show that these correlation data must violate some Bell inequality in order to contain distillable secrecy, if not they could be produced by quantum measurements performed on a separable state of larger dimension. We introduce a new QKD protocol and prove its security against any individual attack by an adversary only limited by the no-signaling condition.
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Quantum cryptography based on Bell’s theorem
Practical application of the generalized Bell's theorem in the so-called key distribution process in cryptography is reported. The proposed scheme is based on the Bohm's version...
Publication Info
- Year
- 2006
- Type
- article
- Volume
- 97
- Issue
- 12
- Pages
- 120405-120405
- Citations
- 675
- Access
- Closed
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- DOI
- 10.1103/physrevlett.97.120405