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Quantum networks wired by multi-spin entanglement

Total Cost €


EC-Contrib. €






 QNETWORK project word cloud

Explore the words cloud of the QNETWORK project. It provides you a very rough idea of what is the project "QNETWORK" about.

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Project "QNETWORK" data sheet

The following table provides information about the project.


Organization address
address: STEVINWEG 1
city: DELFT
postcode: 2628 CN

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Netherlands [NL]
 Total cost 1˙625˙000 €
 EC max contribution 1˙625˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-05-01   to  2023-04-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    TECHNISCHE UNIVERSITEIT DELFT NL (DELFT) coordinator 1˙625˙000.00


 Project objective

Entanglement is arguably the most defining and yet counterintuitive feature of quantum theory. The non-local nature of entanglement provides exciting opportunities for fundamentally new science and technologies. As a prime example, recent theoretical work has uncovered the unique potential of a future quantum network: a network of nodes consisting of multiple well-controlled quantum particles “wired” by quantum entanglement. Such a network would enable distributed quantum computing and simulation, secure communication, enhanced metrology and new fundamental studies of nature. Although recent pioneering advances in quantum control have made quantum networks a realistic prospect, remote entanglement has so far been limited to two long-lived spins in trapped ions, atoms, quantum dots and diamond defect centers.

My QNETWORK project will realize a multi-node entanglement-based quantum network. The network will have fully controlled multi-spin nodes at individual diamond defects connected by single-photon links. Using this quantum network I will demonstrate supremacy of a quantum repeater node over direct photon transmission, generate multi-spin entanglement and study its decoherence, realize quantum teleportation across multiple nodes and finally exploit the network for new scientific experiments ranging from super-activation of entanglement distillation to foundational tests to quantum secret sharing.

To achieve these ambitious goals, this proposal will capitalize on two recent breakthroughs with single electron spins trapped in diamond defects in my group. First, we have entangled electron spins on different chips (most recently over a distance >1km). Second, we have achieved full control over a handful of nuclear spins near one such electron, providing the required quantum memories. If successful, QNETWORK will yield a versatile multi-node quantum network that will serve as a novel platform for groundbreaking science and as a test-bed for a future quantum Internet.


year authors and title journal last update
List of publications.
2018 David D. Awschalom, Ronald Hanson, Jörg Wrachtrup, Brian B. Zhou
Quantum technologies with optically interfaced solid-state spins
published pages: 516-527, ISSN: 1749-4885, DOI: 10.1038/s41566-018-0232-2
Nature Photonics 12/9 2020-01-28
2019 S. B. van Dam, J. Cramer, T. H. Taminiau, R. Hanson
Multipartite Entanglement Generation and Contextuality Tests Using Nondestructive Three-Qubit Parity Measurements
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.123.050401
Physical Review Letters 123/5 2019-12-17
2018 Stephanie Wehner, David Elkouss, Ronald Hanson
Quantum internet: A vision for the road ahead
published pages: eaam9288, ISSN: 0036-8075, DOI: 10.1126/science.aam9288
Science 362/6412 2019-12-17
2019 Anna Tchebotareva, Sophie L. N. Hermans, Peter C. Humphreys, Dirk Voigt, Peter J. Harmsma, Lun K. Cheng, Ad L. Verlaan, Niels Dijkhuizen, Wim de Jong, Anaïs Dréau, Ronald Hanson
Entanglement between a Diamond Spin Qubit and a Photonic Time-Bin Qubit at Telecom Wavelength
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.123.063601
Physical Review Letters 123/6 2019-12-17
2019 Maximilian Ruf, Mark IJspeert, Suzanne van Dam, Nick de Jong, Hans van den Berg, Guus Evers, Ronald Hanson
Optically Coherent Nitrogen-Vacancy Centers in Micrometer-Thin Etched Diamond Membranes
published pages: 3987-3992, ISSN: 1530-6984, DOI: 10.1021/acs.nanolett.9b01316
Nano Letters 19/6 2019-12-17
2019 S. B. van Dam, M. Walsh, M. J. Degen, E. Bersin, S. L. Mouradian, A. Galiullin, M. Ruf, M. IJspeert, T. H. Taminiau, R. Hanson, D. R. Englund
Optical coherence of diamond nitrogen-vacancy centers formed by ion implantation and annealing
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.99.161203
Physical Review B 99/16 2019-12-17

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