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Scientific article
English

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

Published inQuantum information & computation, vol. 8, no. 1&2, p. 0001-0011
Publication date2008
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
Citation (ISO format)
TEMPORAO, Guilherme et al. Feasibility study of free-space quantum key distribution in the mid-infrared. In: Quantum information & computation, 2008, vol. 8, n° 1&2, p. 0001–0011.
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Article (Published version)
accessLevelRestricted
Identifiers
  • PID : unige:36694
ISSN of the journal1533-7146
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