Share Email Print
cover

Proceedings Paper

Finite-key analysis of the six-state protocol with photon number resolution detectors
Author(s): Silvestre Abruzzo; Markus Mertz; Hermann Kampermann; Dagmar Bruss
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The six-state protocol is a discrete-variable protocol for quantum key distribution, that permits to tolerate a noisier channel than the BB84 protocol. In this work we provide a lower bound on the maximum achievable key rate of a practical implementation of the entanglement-based version of the six-state protocol. Regarding the experimental set-up we consider that the source is untrusted and the photon-number statistics is measured using photon-number-resolving detectors. We provide the formula for the key rate for a finite initial number of resources. As an illustration of the considered formalism, we calculate the key rate for the setting where the source produces entangled photon pairs via parametric down-conversion and the losses in the channel depend on the distance. As a result we find that the finite-key corrections for the considered scenario are not negligible and they should be considered in any practical analysis.

Paper Details

Date Published: 20 October 2011
PDF: 11 pages
Proc. SPIE 8189, Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security, 818917 (20 October 2011); doi: 10.1117/12.898049
Show Author Affiliations
Silvestre Abruzzo, Heinrich-Heine-Univ. Düsseldorf (Germany)
Markus Mertz, Heinrich-Heine-Univ. Düsseldorf (Germany)
Hermann Kampermann, Heinrich-Heine-Univ. Düsseldorf (Germany)
Dagmar Bruss, Heinrich-Heine-Univ. Düsseldorf (Germany)


Published in SPIE Proceedings Vol. 8189:
Optics and Photonics for Counterterrorism and Crime Fighting VII; Optical Materials in Defence Systems Technology VIII; and Quantum-Physics-based Information Security
Roberto Zamboni; François Kajzar; Attila A. Szep; Mark T. Gruneisen; Miloslav Dusek; John G. Rarity; Colin Lewis; Douglas Burgess, Editor(s)

© SPIE. Terms of Use
Back to Top