Long-distance entanglement-based quantum key distribution
By G. Ribordy, J. Brendel, J. Gautier, Nicolas Gisin, H. Zbinden. 2000
166 citations recorded by the source corpus.
A detailed analysis of quantum key distribution employing entangled states is presented. We tested a system based on photon pairs entangled in energy-time optimized for long-distance transmission. It is based on a Franson-type setup for monitoring quantum correlations, and uses a protocol analogous to the Bennett-Brassard 1984 protocol. Passive-state preparation is implemented by polarization multiplexing in the interferometers. We distributed a sifted key of 0.4 Mbit at a raw rate of 134 Hz and with an error rate of 8.6% over a distance of 8.5 km. We thoroughly discuss the noise sources and practical difficulties associated with entangled-state systems. Finally, the level of security offered by this system is assessed and compared with that of faint-laser-pulse systems.
Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Physiology
View Paper: https://www.semanticscholar.org/paper/a30bc39935e4dce787d1779967e16c9ffbff7c57
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Micius quantum experiments in space (2022, methodology): “The entanglement-based quantum cryptography was later extended to a distance of 8.5 km using an optical fiber inside a laboratory by Ribordy et al. (2000).”
- Practical Quantum Cryptography: A Comprehensive Analysis (Part One) (2000, background): “In addition, although our analysis does not focus specifically on quantum cryptography with entangled states, such as the Ekert protocol [18] or the recently demonstrated entangled state variant of the original BB84 protocol [19], our results can be modified to apply to it as well.”
- Quantum cryptography (2001, unknown): “This means that the effective photon number is not one, but rather µ ≈ 2/3 (Ribordy et al. 2001), still well above µ = 0.02.”