Finite-key analysis of high-dimensional time–energy entanglement-based quantum key distribution

Finite-key analysis of high-dimensional time–energy entanglement-based quantum key distribution We present a security analysis against collective attacks for a time–energy entanglement-based quantum key distribution protocol, given the practical constraints of single-photon detector efficiency, channel loss, and finite-key considerations. We find a positive secure-key capacity when the key length increases beyond $$10^{4}$$ 10 4 for eight-dimensional systems. The minimum key length required is reduced by the ability to post-select on coincident single-photon detection events. Including finite-key effects, we show the ability to establish a shared secret key over a 200 km fiber link. Quantum Information Processing Springer Journals

Finite-key analysis of high-dimensional time–energy entanglement-based quantum key distribution

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Springer US
Copyright © 2015 by Springer Science+Business Media New York
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
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