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Proceedings Paper

Quantum state regeneration in entanglement based quantum key distribution protocols
Author(s): Reinhard Erdmann
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Paper Abstract

Quantum Key Distribution (QKD) has been shown to be provably secure when certain idealized conditions are met in a physical realization. All implementations of QKD to date require non-orthogonal basis measurements to implement it; making it commonly assumed that measurement basis variation is fundamental to making QKD protocols secure from eavesdropping. We show here that in particular physical conditions this assumption is incorrect, and that provable security can be achieved without use of multiple bases. Basis setting information can in fact be shared with all potential eavesdroppers, as they are unable to use it to acquire or influence any part of the encryption key generation. Furthermore the key generation efficiency is limited to 100 % as compared with an inherent 50 % limit for alternating bases in BB84 or Entangled Ekert protocols.

Paper Details

Date Published: 28 May 2014
PDF: 8 pages
Proc. SPIE 9123, Quantum Information and Computation XII, 912303 (28 May 2014); doi: 10.1117/12.2051166
Show Author Affiliations
Reinhard Erdmann, Advanced Automation Corp. (United States)

Published in SPIE Proceedings Vol. 9123:
Quantum Information and Computation XII
Eric Donkor; Andrew R. Pirich; Howard E. Brandt; Michael R. Frey; Samuel J. Lomonaco; John M. Myers, Editor(s)

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