Feasibility study of free-space quantum key distribution in the mid-infrared

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Title		Feasibility study of free-space quantum key distribution in the mid-infrared
Authors		Temporao, Guilherme Zbinden, Hugo Tanzilli, Jean-Sébastien Gisin, Nicolas Aellen, Thierry Giovannini, Marcella Edith Faist, Jerome Von Der Weid, Jean-Pierre
Published in		Quantum Information and Computation. 2008, vol. 8, no. 1&2, p. 0001-0011
Abstract		We report on a feasibility study of a free-space Quantum Key Distribution setup operating at a mid-infrared wavelength. Alice sends polarization-coded pseudo-single photons from a Quantum Cascade Laser at 4.6 μm to Bob, who uses a nonlinear crystal and a Silicon Avalanche Photodiode to perform the detection via Sum Frequency Generation. Theoretical predictions, based on a proof-of-principle experiment, show that, under certain foggy atmospheric conditions, the proposed system is barely affected, whereas other systems operating at standard near-infrared wavelengths would simply not work at all.
Keywords		Quantum Key Distribution — Mid-Infrared — Free-Space Optics — Frequency Up-Conversion
Full text		Article (Published version) (300 Kb) - Limited access to UNIGE
Structures		Faculté des sciences / Section de physique / Groupe de physique appliquée
Citation (ISO format)		TEMPORAO, Guilherme et al. Feasibility study of free-space quantum key distribution in the mid-infrared. In: Quantum Information and Computation, 2008, vol. 8, n° 1&2, p. 0001-0011. https://archive-ouverte.unige.ch/unige:36694