• Workshop for Quantum Repeaters and Networks (WQRN)

  • About WQRN

    The 1998 proposal introducing a quantum repeater resulted in high-profile efforts on vital components needed to establish a multi-node quantum network. Quantum repeaters utilize quantum entanglement, quantum memories, techniques for suppressing quantum errors and quantum teleportation to dramatically enhance both the reach and bit rate of quantum communication. Various experimental schemes have been proposed and components developed, and early experimental efforts are working towards the realization of a quantum repeater. Despite the progress, significant challenges remain, first in proof-of-principle demonstrations and then in the development of practical systems adequate for deployment in the field.


    The goal of this workshop is to bring the active research community together to discuss the progress, challenges and new possible directions for quantum repeaters and networks. We invite researchers working on key enabling technologies and system integration, protocols for connecting repeaters across network links with high fidelity, architectures for large-scale networks, and applications of distributed quantum entanglement.


    The WQRN has been and continues to be a limited-attendance, few-day workshop, in which participants are given the opportunity to share ideas, directions, and concerns to advance the state of the field. Talks are by invitation only and catered to broadly cover the applications, theory, components, and worldwide directions in quantum repeaters and networks. These talks frame group discussion sessions for which all participants are welcome to contribute; participants are also welcome to contribute to a poster session.

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    WQRN4 will be held September 11-13, 2024, in beautiful Montreux, Switzerland.

    Please see the local host's web page for more information.


    Please click here to apply for participating in WQRN 2024




    WQRN 2024 Workshop Sessions

    Worldwide quantum network efforts

    Satellite-assisted quantum networking

    Challenges and solutions for quantum network components and systems

    Status and perspectives for scalable quantum repeater networks

    Applications and protocols for quantum networks

    + poster session, industry panel


    Confirmed Invited Speakers

    Xiao-Hui Bao, USTC, China

    Sophia Economou, Virginia Tech, USA

    Elizabeth Goldschmidt, University of Illinois, USA

    Ronald Hanson, QuTech TU Delft, The Netherlands

    Liang Jiang, University of Chicago, USA

    Thomas Jennewein, University of Waterloo, Canada

    Julien Laurat, Sorbonne University, France

    Daniel Oi, University of Strathclyde, UK

    Sergey Polyakov, NIST, USA

    Nicolas Sangouard, CEA, France

    Stephanie Wehner, QuTech-TU Delft, The Netherlands

    Qiang Zhang, USTC, China

    Matt Eichenfield, University of Arizona, USA

    and more to beconfirmed


  • Committees

    Steering Committee

    • Chair: Saikat Guha (University of Arizona, USA)
    • Thaddeus Ladd (HRL Laboratories, LLC, USA)
    • Tracy Northup (University of Innsbruck, Austria)
    • Rodney Van Meter (Keio University, Japan)
    • Kae Nemoto (Okinawa Institute of Science and Technology, Japan)
    • Eleni Diamanti (Sorbonne University, France)
    • Hugues de Riedmatten (University of Geneva, Switzerland)
    • Oliver Slattery (National Institute of Standards and Technology, USA)
    • Paul Kwiat (University of Illinois, Urbana Champaign, USA) 


    WQRN4 Program Subcommittee

    • Co-Chair: Eleni Diamanti (Sorbonne University, France)
    • Co-Chair: Masahiro Takeoka (Keio University, Japan)
    • Oliver Slattery (National Institute of Standards and Technology, USA)
    • Paul Kwiat (University of Illinois, Urbana Champaign, USA) 

    WQRN4 Local Organization Subcommittee

    • Wolfgang Tittel (University of Geneva, Switzerland)
    • Nicolas Brunner (University of Geneva, Switzerland)
    • Géraldine Haack (University of Geneva, Switzerland)
    • Mikael Afzelius (University of Geneva, Switzerland)
    • Robert Thew (University of Geneva, Switzerland)


  • Previous WQRNs

    Rubinstein forum

    Chicago, USA, 2022

    The third WQRN was held the weekend of
    August 19-21, 2022 at the David Rubenstein Forum at the University of Chicago.

    • Rod Van Meter, Keio University, Tutorial: "Quantum Networks from Scratch"
    Worldwide quantum network efforts
    Chair: Thaddeus Ladd, HRL Laboratories
    • David Awschalom, University of Chicago
    • Lindsay LeBlanc, University of Alberta
    • Alexander Ling, National University of Singapore
    • Tim Spiller, University of York
    • Saikat Guha, University of Arizona

    Quantum networks: theory and metrics

    Chair: Liang Jiang, University of Chicago 

    • Don Towsley, University of Massachusetts Amherst
    • Koji AzumaNTT Basic Research Laboratories
    • Johannes Borregaard, T. U. Delft
    • Quntao Zhang, University of Southern California
    Components of quantum repeaters and networks
    Chair: Elizabeth Goldschmidt, University of Illinois at Urbana-Champaign
    • Zheshen Zhang, University of Arizona
    • Peter Lodahl, University of Copenhagen
    • Amir Safavi-Naeini, Stanford University
    • Wolfgand Tittel, T. U. Delft
    • Jeff Thompson, Princeton University
    Scaling quantum repeaters and networks
    Chair: Saikat Guha, University of Arizona
    • Paul Kwiat, University of Illinois at Urbana-Champaign
    • Dirk Englund, Massachusetts Institute of Technology
    • Ed Barnes, Virginia Tech
    • Harry Buhrman, University of Amsterdam and QuSoft 
    Krumers Alpin Resort, Seefeld, Austria

    Seefeld, Austria, 2017

    The second WQRN was held in Seefeld, in the Austrian Alps, in September of 2017.


    What can we do with quantum networks? What do we want to do?

    • Stephanie Wehner, Delft University of Technology
    • Iordanis Kerenidis, CNRS Paris
    • Jonathan P. Dowling, Louisiana State University
    • Robert Broberg, Cisco Systems, Inc.
    • Damian Markham, CNRS, Université Pierre et Marie Curie
    • Joe Fitzsimmons, National University of Singapore
    • Rod Van Meter, Keio University
    Figures of merit: Developing a common language
    • Saikat Guha, University of Arizona
    • Wolfgang Dür, University of Innsbruck
    • Martin Roetteler, Microsoft Research
    • Stefano Pirandola, University of York
    • Kae Nemoto, National Institute of Informatics
    • Mohsen Razavi, University of Leeds
    • Simon Benjamin, Oxford University
    Component technologies and building blocks
    • Ronald Hanson, Delft University of Technology
    • Christopher Monroe, JQI and U. Maryland
    • Ruffin Evans, Harvard University
    • Mikael Afzelius, University of Geneva
    • Gerhard Rempe, Max Planck Institute of Quantum Optics
    • Alex Kuzmich, University of Michigan
    • Julien Laurat, Laboratoire Kastler Brossel, UPMC
    • Hugues de Riedmatten, ICFO
    Scalability toward practical applications and new approaches
    • Peter van Loock, University of Mainz
    • Cheng-Zhi Peng, University of Science and Technology of China
    • Khabat Heshami, NRC Ottawa
    • Anders Sørensen, Niels Bohr Institute, University of Copenhagen
    • Kartik Srinivasan, National Institute of Standards and Technology
    • Christine Muschik, University of Innsbruck
    • Nicolas Sangouard, University of Basel
    Merrill Hall at Asilomar Conference Grounds

    Asilomar, USA, 2015

    The first WQRN was held in the historic coastal location of Asilomar, in Pacific Grove, California, in May of 2015.


    Quantum Repeaters: Objectives, Definitions and Architecture

    • Norbert Lütkenhaus, University of Waterloo
    • Saikat Guha, BBN Technologies
    Generations of Quantum Repeaters
    • Bill Munro, Nippon Telegraph and Telephone Corporation
    • Kae Nemoto, National Institute of Informatics
    • Sreraman Muralidharan,Yale University
    Quantum Repeater Architecture Under Development
    • Jungsang Kim, Duke University
    • Wolfgang Tittel, University of Calgary
    • Mikael Afzelius, University of Geneva
    • Matt Sellers, Australian National University
    • Cody Jones, HRL Laboratories, LLC
    Panel on Quantum Networks
    • Chip Elliott, BBN Technologies
    • Joe Fitzsimons, National University of Singapore
    • Stephanie Barz, University of Oxford
    • Gabriel Durkin, NASA Ames Research Center
    Quantum Repeater Components
    • Rainer Blatt, University of Innsbruck
    • Mark Saffman, University of Wisconsin
    • Andrew Shields, Toshiba
    • Michael Zugenmaier, Niels Bohr Institute
    • Jeremy O'Brien, University of Bristol
    • Thomas Gerrits, National Institute of Standards and Technology
    • Geoff Pryde, Griffith University
    • Kartik Srinivasan, National Institute of Standards and Technology
    • Pascale Senellart, CNRS - Laboratoire de Photonique et de Nanostructures
    • Xiaohui Bao, University of Science and Technology of China
    Quantum Repeater Technologies
    • Bob Peterson, University of Colorado, Boulder
    • Charles Santori, HP Labs
    • Mikael Afzelius, University of Geneva
    • Dirk Englund, Massachusetts Institute of Technology
    • Andreas Reiserer, Kavli Institute of Nanoscience, Delft University of Technology
    Each session featured discussions led by members of the steering committee.
  • FAQ

    Frequently Asked Questions

    Pagoda at Kiyomizu-dera in Kyoto, Japan


    Q1. How can I learn more?

    Contact us using the form below if you have questions.

    Q2: How is WQRN organized?

    WQRN is organized according to its charter, which indicates how the steering committee is assembled and updated, as well as how local organization and program planning are conducted.

    Q3: How do I register to attend the workshop?

    Please visit the local page for the upcoming workshop for program, travel, registration, and more.

  • Contact Us

    Drop us a note here if you have urgent questions. Otherwise, please be patient as we add more information!

    Site maintained by
    Saikat Guha