Image
Home Labs and Groups Hanson Lab Hanson Lab | Research highlights Hanson Lab | A rudimentary quantum network link between Dutch cities

A rudimentary quantum network link between Dutch cities - 2024

Our research team has demonstrated a network connection between quantum processors over metropolitan distances. These results mark a key advance from early research networks in our lab towards a future quantum internet. Our team developed fully independently operating nodes and integrated these with deployed optical internet fibre, enabling a 25 km quantum link. These findings have been published in Science Advances on 30 October 2024.

Below you can find relevant articles, an image gallery and a video. Please click on the images to access the high-resolution version. The material may be used free of royalties for purposes of news items when adding content authorship.

Scientific article

Metropolitan-scale heralded entanglement of solid-state qubits
A.J. Stolk, K.L. van der Enden, M.-C. Slater, I. te Raa-Derckx, P. Botma, J. van Rantwijk, J.J.B. Biemond, R.A.J. Hagen, R.W. Herfst, W.D. Koek, A.J.H. Meskers, R. Vollmer, E.J. van Zwet, M. Markham, A.M. Edmonds, J.F. Geus, F. Elsen, B. Jungbluth, C. Haefner, C. Tresp, J. Stuhler, S. Ritter, R. Hanson

DOI: 10.1126/sciadv.adp6442

Link to online article

Image
The full system in one lab before it was deployed to the locations in the field. The white racks contain all the hardware for the midpoint (center). and the two optical tables to the sides and hardware in the back are the end nodes (left and right of picture). Together they form the quantum link, compatible with existing telecom infrastructure. Photo Credit: Arian Stolk for QuTech.
Image
Researchers Arian Stolk and Kian van der Enden controlling the experiments from the lab. Photo credit: Cheeseworks for QuTech
Image
Diamond Quantum Processor: Researchers handling the diamond chip, removing it from the cryostat (gold/grey platform) and preparing it for transport. When installed, the quantum processor can be accessed optically via a microscope (not shown) and quantum gates can be applied using microwave lines. Photo credit: Jeroen van der Horst for QuTech.
Image
Photo credit: Studio Oostrum for QuTech.
Image
Photo credit: Jeroen van der Horst for QuTech
Image
Map of the Netherlands, showing the three locations of the quantum link and their functions. Two nodes, one in Delft (purple) and one in Den Haag (pink), are connected via a midpoint in Rijswijk (blue) using 25km of deployed telecom fiber (purple line). The resulting entanglement is generated between the nodes in Delft and Den Haag. Credit: A. J. Stolk, K. L. van der Enden et al. Sci. Adv.10, eadp6442 (2024) DOI: 10.1126/sciadv.adp6442

 

Press Release and News items