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Quantum Cryptography Security

Continuous-Variable Measurement-Device-Independent Quantum Key Distribution in Free-Space Channels

arXiv
Authors: Masoud Ghalaii, Stefano Pirandola

Year

2022

Paper ID

14123

Status

Preprint

Abstract Read

~2 min

Abstract Words

112

Citations

N/A

Abstract

The field of space communications is the realm of communication technologies where diffraction and atmospheric effects, both of which contribute to loss and noise, become overriding. The pertinent questions here are how and at which rate information (secret keys) can be securely transferred (shared) among users under such supposedly severe circumstances. In the present work we study continuous-variable (CV) quantum key distribution (QKD) in a measurement-device-independent (MDI) configuration over free-space optical (FSO) links. We assess the turbulence regime and provide a composable finite-size key rate analysis of the protocol for FSO links. We study both short-range, horizontal communication links as well as slant paths to, e.g., high-altitude platform station (HAPS) systems.

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  • This paper contributes to the Quantum Cryptography & Security research area in the Quantum Articles archive.
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  • The field of space communications is the realm of communication technologies where diffraction and atmospheric effects, both of which contribute to loss and noise, become...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2212.06687 [2] arXiv https://arxiv.org/abs/2212.06687 [3] Publisher https://arxiv.org/abs/2212.06687

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