Quantum Cryptography: A Source of Single Photons for Quantum Key Distribution in Space

Quantum Key Distribution (QKD) is a secure cryptographic information transmission method that relies on quantum properties of photons. QKD in space imposes challenges: atmospheric absorption and turbulence. Motivated by a comprehensive model to simulate a satellite-to-ground link, we address these problems with a tunable heralded single-photon source with signal photons ranging from 1064 to 2300 nm in free-space. The photons are produced via spontaneous parametric down-conversion (SPDC) in a seven-grated periodically poled lithium niobate (PPLN) crystal.

Publication Details

Journal
Open Repository and Bibliography (University of Liège)
Published
2025-01-01
Primary Topic
QR Code Applications and Technologies
Type
article
Field-Weighted Citation Impact
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article

Quantum Cryptography: A Source of Single Photons for Quantum Key Distribution in Space

Open Repository and Bibliography (University of Liège)
QR Code Applications and Technologies
article

Quantum Cryptography: A Source of Single Photons for Quantum Key Distribution in Space

article en

Abstract

Quantum Key Distribution (QKD) is a secure cryptographic information transmission method that relies on quantum properties of photons. QKD in space imposes challenges: atmospheric absorption and turbulence. Motivated by a comprehensive model to simulate a satellite-to-ground link, we address these problems with a tunable heralded single-photon source with signal photons ranging from 1064 to 2300 nm in free-space. The photons are produced via spontaneous parametric down-conversion (SPDC) in a seven-grated periodically poled lithium niobate (PPLN) crystal.

Open Repository and Bibliography (University of Liège)
Openalex Percentile: Top 35%
QR Code Applications and Technologies
Open Access PDFOpenAlex
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Quantum Cryptography: A Source of Single Photons for Quantum Key Distribution in Space · Open Repository and Bibliography (University of Liège) (2025) | TGRS Research Map | TGRS