GravNet Collaboration Meeting

Europe/Berlin
1395/00-111 - Meeting Room Ground Floor I (HIM)

1395/00-111 - Meeting Room Ground Floor I

HIM

8
Description

GravNet - Searching for High Frequency Gravitational Waves with a Global Detector Network

Location: University of Mainz, Germany

Date: Thursday, 26th of June 2025 to Friday, 27th of June 2025

 

The idea of searching for high frequency gravitational waves has recently received significant attention. GravNet (Global Network of Cavities to Search for Gravitational Waves) is a novel experimental scheme enabling the search for gravitational waves with MHz frequencies and above, which could be caused for example by primordial black hole mergers. The scheme is based on synchronous measurements of signals from several experimental setup at distant locations. Although signatures of gravitational waves may be present as identifiable signals in a single cavity, it is highly challenging to distinguish them from noise. By analysing the correlation between signals from multiple, geographically separated cavities, it is not only possible to increase substantially the signal over noise ratio, but also to investigate the nature and the source of those gravitational wave signatures.

This is the first international meeting of GravNet, aiming to extend the collaboration across the globe. We will discuss how to optimally setup the network, design the underlying technical infrastructure as well as how to integrate as many experimental sites as possible. The workshop will be hosted at the University of Mainz, Germany. The participation is free of any registration fees. Special funds to support the participation of junior researchers might become available.

 

Travel
Mainz can easily be reached via plane, train and by car. The closest airport is Frankfurt (FRA). From there trains brings you in half an hour to Mainz central station (Mainz Hbf). You can take either the regional train or the S-Bahn S8 in the direction Wiesbaden.

From Mainz central station trams 51 and 53 as well as buses 54, 55, 56, 57, 58, and 68 bring you to the university in 5 min. Schedule can be checked at https://www.rmv.de. The closest stops is called "University".

Parking on the university campus is not possible. The closest public (free) parking is called Parkplatz Dahlheimer Weg - Uni Mainz.

Accommodation
Mainz is a beautiful city which offers many possibilities for accommodation which you can find via the usual booking portals. Some well located hotels are 

  • https://www.hotel-koenigshof-mainz.de
  • https://www.hotel-hammer.com
  • https://hrewards.com/de/intercityhotel-mainz

 

Registration
Registration
Participants
  • Binish Batool
  • Changhao Xu
  • Claudio Gatti
  • Daniel Gavilán-Martín
  • Diego Blas
  • Dmitry Budker
  • Francesco Arneodo
  • Giovanni Mazzitelli
  • Giuseppe Ruoso
  • Jamie McDonald
  • Javier De Miguel
  • Jonathan Agil
  • Jordan Gué
  • José Reina-Valero
  • Juri Smirnov
  • Kristof Schmieden
  • Lei Cong
  • lorenzo maccone
  • Mark McCulloch
  • Michael Tobar
  • Oleg Tretiak
  • Pedro Schwaller
  • Shafaq Gulzar Elahi
  • Teng Wu
  • Tommaso Tabarelli de Fatis
  • William Campbell
  • Yifan Chen
  • Younggeun Kim
  • Yu Felix
  • Yuriko KOYANAGI
  • +9
Surveys
Conference Dinner
  • Thursday 26 June
    • 09:30 09:50
      Matthais Schott: Welcome to the GravNet meeting @ Mainz! 20m
      Speaker: Matthias Schott (Uni. Bonn)
    • 10:00 10:20
      Dmitry Budker: Introduction to GravNet (the four pillars) (15' + 5' discussion) 20m
      Speaker: Dmitry Budker
    • 10:20 10:40
      Diego Blas: Theory Highlights (15' + 5' discussion) 20m
    • 10:40 11:00
      Claudio Gatti: Quantum Highlights (15' + 5' discussion) 20m
      Speaker: Claudio Gatti (INFN)
    • 11:00 11:15
      Conference Photo and Coffee Break 15m
    • 11:15 12:00
      Presentation Session: Network Technology: How to synchronize many experimentalsSites
      • 11:15
        Advancing Time Synchronization for Global Quantum Sensing: From GNOME Insights to the GravNet Cavity‑Network Framework 20m
        Speakers: Daniel Gavilán Martín (Helmholtz-Institut Mainz, Johannes Gutenberg Universität Mainz), Oleg Tretiak
    • 12:00 13:30
      Lunch 1h 30m
    • 13:30 17:00
      Presentation Session: Overview and contributions from different sites and groups
    • 17:00 17:40
      Lab Tours in Mainz 40m
    • 17:40 19:00
      Mainz City Tour 1h 20m
    • 19:00 21:00
      Conference Dinner 2h
    • 09:00 11:00
      Presentation Session: New Ideas for High Frequency Gravitational Wave Detections
      • 09:00
        Quantum sensing and metrology 40m

        I review the field of quantum metrology, showing how quantum effects such as squeezing and entanglement can be used to increase the precision of measurements using the same amount of resources. I also discuss how quantum teleportation and similar quantum protocols may be used in very large baseline interferometry (VLBI) to increase the effective dimension of interferometers.

        Speaker: Lorenzo Maccone
      • 09:40
        New Ideas for HFGW detection 40m
      • 10:20
        Astrophysical indication for Asteroid Mass Primordial Black Holes and New Search Strategies 20m
        Speaker: Juri Smirnov
    • 11:00 11:30
      Coffee Break 30m
    • 11:30 12:30
      Towards a first GravNet Joint Data Taking 1h
    • 12:30 13:30
      Lunch 1h
    • 13:30 14:15
      Organisation of GravNet 45m
    • 14:15 14:30
      Coffee Break 15m
    • 14:30 14:50
      Discussion on ByLaws and MoUs 20m
    • 14:50 15:00
      Close Out 10m