Terrestrial very-long-baseline atom interferometry: Workshop summary
Authors: Abend Sven , Allard Baptiste , Alonso Iván , Antoniadis John , Araújo Henrique , Arduini Gianluigi , Arnold Aidan S. , Asano Tobias , Augst Nadja , Badurina Leonardo , Balaž Antun , Banks Hannah , Barone Michele , Barsanti Michele , Bassi Angelo , Battelier Baptiste , Baynham Charles F. A. , Beaufils Quentin , Belić Aleksandar , Beniwal Ankit , Bernabeu Jose , Bertinelli Francesco , Bertoldi Andrea , Biswas Ikbal Ahamed , Blas Diego , Boegel Patrick , Bogojević Aleksandar , Böhm Jonas , Böhringer Samuel , Bongs Kai , Bouyer Philippe , Brand Christian , Brimis Apostolos , Buchmueller Oliver , Cacciapuoti Luigi , Calatroni Sergio , Canuel Benjamin , Caprini Chiara , Caramete Ana , Caramete Laurentiu , Carlesso Matteo , Carlton John , Casariego Mateo , Charmandaris Vassilis , Chen Yu-Ao , Chiofalo Maria Luisa , Cimbri Alessia , Coleman Jonathon , Constantin Florin Lucian , Contaldi Carlo R. , Cui Yanou , Ros Elisa Da , Davies Gavin , Rosendo Esther del Pino , Deppner Christian , Derevianko Andrei , Rham Claudia de , Roeck Albert De , Derr Daniel , Di Pumpo Fabio , Djordjevic Goran S. , Döbrich Babette , Domokos Peter , Dornan Peter , Doser Michael , Drougakis Giannis , Dunningham Jacob , Duspayev Alisher , Easo Sajan , Eby Joshua , Efremov Maxim , Ekelof Tord , Elertas Gedminas , Ellis John , Evans David , Fadeev Pavel , Fanì Mattia , Fassi Farida , Fattori Marco , Fayet Pierre , Felea Daniel , Feng Jie , Friedrich Alexander , Fuchs Elina , Gaaloul Naceur , Gao Dongfeng , Gardner Susan , Garraway Barry , Gauguet Alexandre , Gerlach Sandra , Gersemann Matthias , Gibson Valerie , Giese Enno , Giudice Gian F. , Glasbrenner Eric P. , Gündoğan Mustafa , Haehnelt Martin , Hakulinen Timo , Hammerer Klemens , Hanımeli Ekim T. , Harte Tiffany , Hawkins Leonie , Hees Aurelien , Heise Jaret , Henderson Victoria A. , Herrmann Sven , Hird Thomas M. , Hogan Jason M. , Holst Bodil , Holynski Michael , Hussain Kamran , Janson Gregor , Jeglič Peter , Jelezko Fedor , Kagan Michael , Kalliokoski Matti , Kasevich Mark , Kehagias Alex , Kilian Eva , Koley Soumen , Konrad Bernd , Kopp Joachim , Kornakov Georgy , Kovachy Tim , Krutzik Markus , Kumar Mukesh , Kumar Pradeep , Lämmerzahl Claus , Landsberg Greg , Langlois Mehdi , Lanigan Bryony , Lellouch Samuel , Leone Bruno , Poncin-Lafitte Christophe Le , Lewicki Marek , Leykauf Bastian , Lezeik Ali , Lombriser Lucas , Luis Lopez-Gonzalez J. , Lopez Asamar Elias , Monjaraz Cristian López , Luciano Giuseppe Gaetano , Mahmoud M. A. , Maleknejad Azadeh , Krutzik Markus , Marteau Jacques , Massonnet Didier , Mazumdar Anupam , McCabe Christopher , Meister Matthias , Menu Jonathan , Messineo Giuseppe , Micalizio Salvatore , Millington Peter , Milosevic Milan , Mitchell Jeremiah , Montero Mario , Morley Gavin W. , Müller Jürgen , ioğlu Özgür E. Müstecapl , Ni Wei-Tou , Noller Johannes , Odžak Senad , Oi Daniel K. L. , Omar Yasser , Pahl Julia , Paling Sean , Pandey Saurabh , Pappas George , Pareek Vinay , Pasatembou Elizabeth , Pelucchi Emanuele , Pereira dos Santos Franck , Piest Baptist , Pikovski Igor , Pilaftsis Apostolos , Plunkett Robert , Poggiani Rosa , Prevedelli Marco , Puputti Julia , Veettil Vishnupriya Puthiya , Quenby John , Rafelski Johann , Rajendran Surjeet , Rasel Ernst M. , Sfar Haifa Rejeb , Reynaud Serge , Richaud Andrea , Rodzinka Tangui , Roura Albert , Rudolph Jan , Sabulsky Dylan O. , Safronova Marianna S. , Santamaria Luigi , Schilling Manuel , Schkolnik Vladimir , Schleich Wolfgang P. , Schlippert Dennis , Schneider Ulrich , Schreck Florian , Schubert Christian , Schwersenz Nico , Semakin Aleksei , Sergijenko Olga , Shao Lijing , Shipsey Ian , Singh Rajeev , Smerzi Augusto , Sopuerta Carlos F. , Spallicci Alessandro D. A. M. , Stefanescu Petruta , Stergioulas Nikolaos , Ströhle Jannik , Struckmann Christian , Tentindo Silvia , Throssell Henry , Tino Guglielmo M. , Tinsley Jonathan N. , Tintareanu Mircea Ovidiu , Tkalčec Kimberly , Tolley Andrew. J. , Tornatore Vincenza , Torres-Orjuela Alejandro , Treutlein Philipp , Trombettoni Andrea , Tsai Yu-Dai , Ufrecht Christian , Ulmer Stefan , Valuch Daniel , Vaskonen Ville , Vázquez-Aceves Verónica , Vitanov Nikolay V. , Vogt Christian , Klitzing Wolf von , Vukics András , Walser Reinhold , Wang Jin , Warburton Niels , Webber-Date Alexander , Wenzlawski André , Werner Michael , Williams Jason , Windpassinger Patrick , Wolf Peter , Woerner Lisa , Xuereb André , Yahia Mohamed E. , Cruzeiro Emmanuel Zambrini , Zarei Moslem , Zhan Mingsheng , Zhou Lin , Zupan Jure , Zupanič Erik 
Published: May 2024

This document presents a summary of the 2023 Terrestrial Very-Long-Baseline Atom Interferometry Workshop hosted by CERN. The workshop brought together experts from around the world to discuss the exciting developments in large-scale atom interferometer (AI) prototypes and their potential for detecting ultralight dark matter and gravitational waves. The primary objective of the workshop was to lay the groundwork for an international TVLBAI proto-collaboration. This collaboration aims to unite researchers from different institutions to strategize and secure funding for terrestrial large-scale AI projects. The ultimate goal is to create a roadmap detailing the design and technology choices for one or more kilometer--scale detectors, which will be operational in the mid-2030s. The key sections of this report present the physics case and technical challenges, together with a comprehensive overview of the discussions at the workshop together with the main conclusions.