Towards practical and fast Quantum Cryptography

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dc.creatorGisin, Nicolas
dc.creatorRibordy, Gregoire
dc.creatorZbinden, Hugo
dc.creatorStucki, Damien
dc.creatorBrunner, Nicolas
dc.creatorScarani, Valerio
dc.date2004-11-03
dc.date.accessioned2026-07-07T06:11:25Z
dc.date.available2026-07-07T06:11:25Z
dc.descriptionWe present a new protocol for practical quantum cryptography, tailored for an implementation with weak coherent pulses. The key is obtained by a very simple time-of-arrival measurement on the data line; an interferometer is built on an additional monitoring line, allowing to monitor the presence of a spy (who would break coherence by her intervention). Against zero-error attacks (the analog of photon-number-splitting attacks), this protocol performs as well as standard protocols with strong reference pulses: the key rate decreases only as the transmission $t$ of the quantum channel. We present also two attacks that introduce errors on the monitoring line: the intercept-resend, and a coherent attack on two subsequent pulses. Finally, we sketch several possible variations of this protocol.
dc.identifierhttps://arxiv.org/abs/quant-ph/0411022
dc.identifierhttp://arxiv.org/abs/quant-ph/0411022
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/92482
dc.subjectQuantum Physics
dc.titleTowards practical and fast Quantum Cryptography
dc.typetext

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