Discrete rotational symmetry and quantum-key-distribution protocols

David Shirokoff, Chi Hang Fred Fung, Hoi Kwong Lo

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We study the role of discrete rotational symmetry in the quantum key distribution by generalizing the well-known Bennett-Brassard 1984 and Scarani-Acin-Ribordy-Gisin 2004 protocols. We observe that discrete rotational symmetry results in the protocol's invariance to continuous rotations, thus leading to a simplified relation between bit and phase error rates and consequently a straightforward security proof.

Original languageEnglish (US)
Article number032341
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume75
Issue number3
DOIs
StatePublished - Mar 28 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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