Continuous-Variable Measurement-Device-Independent Quantum Key
Distribution in Free-Space Channels
- URL: http://arxiv.org/abs/2212.06687v1
- Date: Tue, 13 Dec 2022 16:02:35 GMT
- Title: Continuous-Variable Measurement-Device-Independent Quantum Key
Distribution in Free-Space Channels
- Authors: Masoud Ghalaii and Stefano Pirandola
- Abstract summary: 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.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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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