Advances in Space Quantum Communications

@inproceedings{Sidhu2021AdvancesIS,
  title={Advances in Space Quantum Communications},
  author={Jasminder S. Sidhu and Siddarth Koduru Joshi and Mustafa Gundogan and Thomas Brougham and David Lowndes and Lucas Mazzarella and Markus C. Krutzik and Sonali Mohapatra and Daniele Dequal and Giuseppe Vallone and Paolo Villoresi and Alexander Ling and Thomas Jennewein and Makan Mohageg and John G. Rarity and Ivette Fuentes and Stefano Pirandola and Daniel K. L. Oi},
  year={2021}
}
Concerted efforts are underway to establish an infrastructure for a global quantum internet to realise a spectrum of quantum technologies. This will enable more precise sensors, secure communications, and faster data processing. Quantum communications are a front-runner with quantum networks already implemented in several metropolitan areas. A number of recent proposals have modelled the use of space segments to overcome range limitations of purely terrestrial networks. Rapid progress in the… Expand

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References

SHOWING 1-10 OF 448 REFERENCES
CubeSat quantum communications mission
TLDR
The CubeSat Quantum Communications Mission (CQuCoM) would be a pathfinder for advanced nanosatellite payloads and operations, and would establish the basis for a constellation of low-Earth orbit trusted-nodes for QKD service provision. Expand
Space-borne quantum memories for global quantum communication
TLDR
This work demonstrates that satellites equipped with QMs provide three orders of magnitude faster entanglement distribution rates than existing protocols based on fibre-based repeaters or space systems without QMs. Expand
Scheduling of space to ground quantum key distribution
Satellite-based platforms are currently the only feasible way of achieving intercontinental range for quantum communication, enabling thus the future global quantum internet. Recent demonstrations byExpand
Satellite quantum communications: Fundamental bounds and practical security
TLDR
This work applies and extends recent results in free-space quantum communications to determine the ultimate limits at which secret bits can be distributed via satellites, and studies the composable finite-size secret key rates that are achievable by protocols of continuous variable quantum key distribution, for both downlink and uplink. Expand
Experimental demonstration of memory-enhanced quantum communication
TLDR
A solid-state spin memory is used to demonstrate quantum repeater functionality, which has the potential to overcome photon losses involved in long-distance transmission of quantum information. Expand
Qube - A CubeSat for Quantum Key Distribution Experiments
In a world of global satellite communication networks, it is crucial to ensure the security of these data links. QUBE is a project that will develop and launch a CubeSat for the downlink of stronglyExpand
Advances in Quantum Cryptography
TLDR
This review begins by reviewing protocols of quantum key distribution based on discrete variable systems, and considers aspects of device independence, satellite challenges, and high rate protocols based on continuous variable systems. Expand
Quantum repeaters in space
TLDR
This work proposes a scheme that allows to achieve entanglement distribution over global distances with a small number of intermediate untrusted nodes, and performs a comparison with other repeater chain architectures and shows that this scheme, even though more technically demanding, is superior in many situations of interest. Expand
QUARC: Quantum Research Cubesat - A Constellation for Quantum Communication
TLDR
This mission analysis presents the mission analysis showing how a constellation comprising 15 low-cost 6U CubeSats can be used to form a secure communication backbone for ground-based and metropolitan networks across the UK. Expand
Experimental Satellite Quantum Communications.
TLDR
The scheme paves the way toward the implementation of a QC worldwide network leveraging existing receivers by exploiting satellite corner cube retroreflectors as quantum transmitters in orbit and the Matera Laser Ranging Observatory of the Italian Space Agency as a quantum receiver. Expand
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