Raw-data attacks in quantum cryptography with partial tomography

Details Raw-data attacks in quantum cryptography with partial tomography Raw-data attacks in quantum cryptography with partial tomography

2006-09-22

arxiv.org/abs/quant-ph/0609175v1

International Journal of Quantum Information 4 (2006) 1003-1012

Physics

Quantum Physics

11 pages, 2 figures

Scientific paper

We consider a variant of the BB84 protocol for quantum cryptography, the prototype of tomographically incomplete protocols, where the key is generated by one-way communication rather than the usual two-way communication. Our analysis, backed by numerical evidence, establishes thresholds for eavesdropping attacks on the raw data and on the generated key at quantum bit error rates of 10% and 6.15%, respectively. Both thresholds are lower than the threshold for unconditional security in the standard BB84 protocol.

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