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Requirements for a processing-node quantum repeater on a real-world fiber grid

Journal Article (2023)
Author(s)

Guus Avis (TU Delft - QID/Wehner Group, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Francisco Ferreira da Silva (TU Delft - QID/Wehner Group, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Tim Coopmans (Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Elkouss Group)

Axel Dahlberg (TU Delft - QID/Wehner Group, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

Hana Jirovská (TU Delft - QID/Software Group, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

David Maier (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - QID/Wehner Group)

Julian Rabbie (TU Delft - QID/Wehner Group, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Ariana Torres-Knoop (SURF)

Stephanie Wehner (TU Delft - QID/Wehner Group, TU Delft - QuTech Advanced Research Centre, TU Delft - Quantum Computer Science, Kavli institute of nanoscience Delft)

DOI related publication
https://doi.org/10.1038/s41534-023-00765-x Final published version
More Info
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Publication Year
2023
Language
English
Issue number
1
Volume number
9
Article number
100
Downloads counter
333
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Institutional Repository
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Abstract

We numerically study the distribution of entanglement between the Dutch cities of Delft and Eindhoven realized with a processing-node quantum repeater and determine minimal hardware requirements for verifiable blind quantum computation using color centers and trapped ions. Our results are obtained considering restrictions imposed by a real-world fiber grid and using detailed hardware-specific models. By comparing our results to those we would obtain in idealized settings, we show that simplifications lead to a distorted picture of hardware demands, particularly on memory coherence and photon collection. We develop general machinery suitable for studying arbitrary processing-node repeater chains using NetSquid, a discrete-event simulator for quantum networks. This enables us to include time-dependent noise models and simulate repeater protocols with cut-offs, including the required classical control communication. We find minimal hardware requirements by solving an optimization problem using genetic algorithms on a high-performance-computing cluster. Our work provides guidance for further experimental progress, and showcases limitations of studying quantum-repeater requirements in idealized situations.