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Metropolitan-scale heralded entanglement of solid-state qubits

Journal Article (2024)
Author(s)

Arian J. Stolk (TU Delft - QuTech Advanced Research Centre, TU Delft - QID/Hanson Lab, Kavli institute of nanoscience Delft)

Kian L. van der Enden (TU Delft - QID/Hanson Lab, TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft)

Ingmar Te Raa-Derckx (TU Delft - QID/Software Group, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

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

Joris van Rantwijk (Kavli institute of nanoscience Delft, TU Delft - QID/Hanson Lab, TU Delft - QuTech Advanced Research Centre)

J. J.Benjamin Biemond (Kavli institute of nanoscience Delft, TU Delft - BUS/TNO STAFF, TU Delft - QuTech Advanced Research Centre, TNO)

Ronald A.J. Hagen (Kavli institute of nanoscience Delft, TU Delft - BUS/TNO STAFF, TNO, TU Delft - QuTech Advanced Research Centre)

Rodolf W. Herfst (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - BUS/TNO STAFF, TNO)

Wouter D. Koek (Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre, TNO, TU Delft - BUS/TNO STAFF)

Adrianus J.H. Meskers (TNO, Kavli institute of nanoscience Delft, TU Delft - BUS/TNO STAFF, TU Delft - QuTech Advanced Research Centre)

René Vollmer (Kavli institute of nanoscience Delft, TU Delft - BUS/TNO STAFF, TU Delft - QuTech Advanced Research Centre, TNO)

Erwin J. van Zwet (TU Delft - QuTech Advanced Research Centre, Kavli institute of nanoscience Delft, TU Delft - BUS/TNO STAFF, TNO)

Matthew Markham (Element Six Innovation)

J. Fabian Geus (RWTH Aachen University, Fraunhofer Institute for Laser Technology (ILT))

Christoph Tresp (TOPTICA Photonics AG)

Ronald Hanson (TU Delft - QN/Hanson Lab, TU Delft - QID/Hanson Lab, Kavli institute of nanoscience Delft, TU Delft - QuTech Advanced Research Centre)

undefined More Authors (External organisation)

Research Group
QID/Hanson Lab
DOI related publication
https://doi.org/10.1126/sciadv.adp6442
More Info
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Publication Year
2024
Language
English
Research Group
QID/Hanson Lab
Journal title
Science Advances
Issue number
44
Volume number
10
Article number
eadp6442
Pages (from-to)
eadp6442
Downloads counter
432
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Abstract

A key challenge toward future quantum internet technology is connecting quantum processors at metropolitan scale. Here, we report on heralded entanglement between two independently operated quantum network nodes separated by 10 kilometers. The two nodes hosting diamond spin qubits are linked with a midpoint station via 25 kilometers of deployed optical fiber. We minimize the effects of fiber photon loss by quantum frequency conversion of the qubit-native photons to the telecom L-band and by embedding the link in an extensible phase-stabilized architecture enabling the use of the loss-resilient single-click entangling protocol. By capitalizing on the full heralding capabilities of the network link in combination with real-time feedback logic on the long-lived qubits, we demonstrate the delivery of a predefined entangled state on the nodes irrespective of the heralding detection pattern. Addressing key scaling challenges and being compatible with different qubit systems, our architecture establishes a generic platform for exploring metropolitan-scale quantum networks.