Quantum key distribution using a triggered quantum dot source emitting near 1.3 microns

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dc.creatorIntallura, P. M.
dc.creatorWard, M. B.
dc.creatorKarimov, O. Z.
dc.creatorYuan, Z. L.
dc.creatorSee, P.
dc.creatorShields, A. J.
dc.creatorAtkinson, P.
dc.creatorRitchie, D. A.
dc.date2007-10-02
dc.date.accessioned2026-07-07T08:41:13Z
dc.date.available2026-07-07T08:41:13Z
dc.descriptionWe report the distribution of a cryptographic key, secure from photon number splitting attacks, over 35 km of optical fiber using single photons from an InAs quantum dot emitting ~1.3 microns in a pillar microcavity. Using below GaAs-bandgap optical excitation, we demonstrate suppression of multiphoton emission to 10% of the Poissonian level without detector dark count subtraction. The source is incorporated into a phase encoded interferometric scheme implementing the BB84 protocol for key distribution over standard telecommunication optical fiber. We show a transmission distance advantage over that possible with (length-optimized) uniform intensity weak coherent pulses at 1310 nm in the same system.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0710.0565
dc.identifierhttp://arxiv.org/abs/0710.0565
dc.identifierAppl. Phys. Lett. 91, 161103 (2007)
dc.identifierdoi:10.1063/1.2799756
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141614
dc.subjectQuantum Physics
dc.titleQuantum key distribution using a triggered quantum dot source emitting near 1.3 microns
dc.typetext

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