Technologies for the ELGAR large scale atom interferometer array

B. Canuel (1) , S. Abend , P. Amaro-Seoane , F. Badaracco , Q. Beaufils (2) , A. Bertoldi (1) , K. Bongs (3) , Philippe Bouyer (1) , C. Braxmaier (4) , W. Chaibi (5) , N. Christensen (5) , F. Fitzek , G. Flouris , N. Gaaloul (6) , S. Gaffet , C. L. Garrido Alzar , R. Geiger (7) , Saïda Guellati-Khélifa (8) , K. Hammerer , J. Harms (9) , J. Hinderer (10) , J. Junca , S. Katsanevas , C. Klempt , C. Kozanitis , M. Krutzik , A. Landragin (7) , I. Lazaro Roche (11) , B. Leykauf , Y. -H. Lien , S. Loriani , S. Merlet (12) , M. Merzougui (5) , M. Nofrarias , P. Papadakos , Franck Pereira dos Santos (7) , A. Peters (13) , D. Plexousakis (14) , M. Prevedelli (15) , E. Rasel (16) , Y. Rogister (10) , S. Rosat (10) , A. Roura , D. O. Sabulsky , V. Schkolnik , D. Schlippert , C. Schubert (17) , L. Sidorenkov , J. -N. Siemss , C. F. Sopuerta , F. Sorrentino (18) , C. Struckmann , G. M. Tino (18) , G. Tsagkatakis , A. Vicere (19) , W. von Klitzing , L. Woerner , X. Zou

1 LP2N - Laboratoire Photonique, Numérique et Nanosciences
2 LPL - Laboratoire de Physique des Lasers
3 University of Birmingham [Birmingham]
4 Institute for Optical Systems
5 ARTEMIS - Astrophysique Relativiste Théories Expériences Métrologie Instrumentation Signaux
6 IQ - Institut für Quantenoptik [Hannover]
7 SYRTE - Systèmes de Référence Temps Espace
8 LKB (Jussieu) - Laboratoire Kastler Brossel
9 INFN, Sezione di Firenze - Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
10 IPGS-DGDA - Dynamique globale et déformation active (IPGS)
11 LSBB - Laboratoire Souterrain à Bas Bruit
12 LNE - SYRTE - Laboratoire national de métrologie et d'essais - Systèmes de Référence Temps-Espace
13 Department of Physics [Berlin]
14 Information Systems Laboratory, Institute of Computer Science, FO.R.T.H
15 Dipartimento di Chimica Fisica e Inorganica [Bologna]
16 Leibniz Universität Hannover=Leibniz University Hannover
17 Chemnitz University of Technology / Technische Universität Chemnitz
18 Dipartimento di Fisica e Astronomia [Firenze]
19 Sezione di Perugia

We proposed the European Laboratory for Gravitation and Atom-interferometric Research (ELGAR), an array of atom gradiometers aimed at studying space-time and gravitation with the primary goal of observing gravitational waves (GWs) in the infrasound band with a peak strain sensitivity of 3.3×10−22/Hz‾‾‾√ at 1.7 Hz. In this paper we detail the main technological bricks of this large scale detector and emphasis the research pathways to be conducted for its realization. We discuss the site options, atom optics, and source requirements needed to reach the target sensitivity. We then discuss required seismic isolation techniques, Gravity Gradient Noise reduction strategies, and the metrology of various noise couplings to the detector.

Domains: Other [cond-mat.other]; Quantum Physics [quant-ph]; Atomic Physics [physics.atom-ph]; Space Physics [physics.space-ph]; Optics / Photonic

B. Canuel, S. Abend, P. Amaro-Seoane, F. Badaracco, Q. Beaufils, et al.. Technologies for the ELGAR large scale atom interferometer array. 2020. ⟨hal-02989745⟩