Intermediate states in quantum cryptography and Bell inequalities

 Authors: H Bechmann-Pasquinucci, N Gisin Physical Review A 67, 062310 (2003) http://dx.doi.org/10.1103/PhysRevA.67.062310 Intermediate states are known from intercept/resend eavesdropping in the Bennett-Brassard 1984 (BB84) quantum cryptographic protocol. But they also play fundamental roles in the optimal eavesdropping strategy on the BB84 protocol and in the CHSH (Clauser-Horne-Shimony-Holt) inequality. We generalize the intermediate states to an arbitrary dimension and consider intercept/resend eavesdropping, optimal eavesdropping on the generalized BB84 protocol and present a generalized Clauser-Horne-Shimony-Holt inequality for two entangled qudits based on these states. intstatebell.pdf

BibTeX Source

@Article{Bechmann-Pasquinucci2003,
author =       "H. Bechmann-Pasquinucci and N. Gisin",
title =        "Intermediate states in quantum cryptography and Bell inequalities",
journal =      "Physical Review A",
year =         "2003",
volume =       "67",
pages =        "062310",
abstract =     "Intermediate states are known from intercept/resend eavesdropping in the
Bennett-Brassard 1984 (BB84) quantum cryptographic protocol. But they also play
fundamental roles in the optimal eavesdropping strategy on the BB84 protocol and in
the CHSH (Clauser-Horne-Shimony-Holt) inequality. We generalize the intermediate
states to an arbitrary dimension and consider intercept/resend eavesdropping,
optimal eavesdropping on the generalized BB84 protocol and present a generalized
Clauser-Horne-Shimony-Holt inequality for two entangled qudits based on these
states.",
doi =          "10.1103/PhysRevA.67.062310",
owner =        "cc",
sn =           "1050-2947",
timestamp =    "2010.08.20",
ut =           "WOS:000183915200039",
}