Feasibility of satellite quantum key distribution

By Cristian Bonato, Andrea Tomaello, Vania Da Deppo, Giampiero Naletto, Paolo Villoresi. 2009

225 citations recorded by the source corpus.

In this paper, we present a novel analysis of the feasibility of quantum key distribution between a LEO satellite and a ground station. First of all, we study signal propagation through a turbulent atmosphere for uplinks and downlinks, discussing the contribution of beam spreading and beam wandering. Then we introduce a model for the background noise of the channel during night-time and day-time, calculating the signal-to-noise ratio for different configurations. We also discuss the expected error-rate due to imperfect polarization compensation in the channel. Finally, we calculate the expected key generation rate of a secure key for different configurations (uplink, downlink) and for different protocols (BB84 with and without decoy states, entanglement-based Ekert91 protocol).

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/63f40e54d4d09a7e01aaef54d907b04234754667

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Complete experimental toolbox for alignment-free quantum communication (2012, background): “followed by a projection onto an m = 0 Gaussian spatial mode (for example, by coupling it into a single-mode fibre), which leads to the following final state: (6)”
Quantum repeaters based on atomic ensembles and linear optics (2009, background): “There are several feasibility studies, both theoretical (Bonato et al., 2009; Villoresi et al., 2004) and experimental (Peng et al., 2005; Villoresi et al., 2008).”
Advances in quantum cryptography (2019, unknown): “[340] C.”
Fundamental quantum optics experiments conceivable with satellites—reaching relativistic distances and velocities (2012, unknown): “[132, 133, 13, 134, 135, 3].”
Diamond-based single-photon emitters (2011, background): “Given their current emission wavelengths, roomtemperature operation and portability, the main applications of diamond-based SPSs are in open-air terrestrial or satelliteground communications [142, 143].”
A Survey on Nongeostationary Satellite Systems: The Communication Perspective (2021, methodology): “Thus, more efficient and sophisticated methods from the areas of quantum key distribution (QKD), block-chain technology (BCT), and physical layer security have been proposed [231], [232], [233], [234].”