English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Quantum key distribution using multilevel encoding: security analysis

MPS-Authors
/persons/resource/persons60423

Bourennane,  M.
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Bourennane, M., Karlsson, A., Björk, G., Gisin, N., & Cerf, N. J. (2002). Quantum key distribution using multilevel encoding: security analysis. Journal of Physics A-Mathematical and General, 35(47), 10065-10076. Retrieved from http://stacks.iop.org/0305-4470/35/10065.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000F-C19D-4
Abstract
We propose an extension of quantum key distribution based on encoding the key into quNits, i.e. quantum states in an N-dimensional Hilbert space. We estimate both the mutual information between the legitimate parties and the eavesdropper, and the error rate, as a function of the dimension of the Hilbert space. We derive the information gained by an eavesdropper using optimal incoherent attacks and an upper bound on the legitimate party error rate that ensures unconditional security when the eavesdropper uses finite coherent eavesdropping attacks. We also consider realistic systems where we assume that the detector dark count probability is not negligible.