Satellite-based quantum entanglement distribution scheme using transported processor nodes with rare-earth-ion qubits
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[Submitted on 13 Jun 2026]
Properly proved. Has structure, has flavour, has a point.
Summary
This paper proposes a scheme for global-scale entanglement distribution using satellites that physically transport entangled processor nodes with rare-earth-ion qubits. The scheme works in a heralded manner and can distribute close to the theoretical maximum number of entangled pairs between two ground stations using just a single satellite. The analysis covers channel losses, errors, and background light, showing EPR pair fidelity ranging from 99.3% at shorter network lengths to 93.9% with global coverage. The authors argue transportation-based schemes outperform other satellite-based approaches and can scale to a constellation without additional channel losses, with daytime operation feasible under clear skies.
Key quotes
· 4 pulledWe propose a scheme for distributing entanglement over global distances in a heralded manner by using satellites to physically transport entangled processor nodes with rare-earth-ion qubits.
We show that the scheme works already with a single satellite and can distribute close to the theoretical maximum number of entangled pairs that can be generated in a satellite overpass.
In addition, we argue that in theory transportation-based schemes outperform other satellite-based schemes and can be scaled up to a constellation without additional channel losses.
Daytime operation seems feasible as long as the sky is clear, with an EPR pair fidelity ranging from 99.3% at shorter network lengths to 93.9% with global coverage.
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