Hannover 2020 – wissenschaftliches Programm

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SYAI: Symposium Trends in atom interferometry

SYAI 1: Trends in atom interferometry

SYAI 1.2: Hauptvortrag

Montag, 9. März 2020, 14:30–15:00, e415

Atom interferometry for advanced geodesy and gravitational wave observation — •Philippe Bouyer — LP2N, IOGS, CNRS and Univ. de Bordeaux, 33400 Talence, France

In 2016, one century after Einstein predicted theirexistence, scientists made the first observation gravitationalwaves (GW). Since this first observation, many more eventshave been detected, confirming that GW opens a new windowfor studying the cosmos. There is today a growing interest inGW astronomy;The scientific potential of is enormous, in termsof providing a deep view into the past of our universe, andcomplement other observation windows such as radio telescopesor infrared observatory. The success of this new astronomyrelies on our faculty to expand our observation frequencywindow to other frequencies. The Laser Interferometer SpaceAntenna (LISA) to investigate frequency sources at very lowfrequency gives a partial, long term answer to this challenge.Nevertheless, it leaves a large gap, the infrasound (mHz to tensof Hz) band, uncovered. An underground gravitational waveantenna can provide a quick response to this problem and wouldnaturally complete and enhance the present and future set ofGW observatories. MIGA is a long baseline, mid-frequency,GW observation infrastructure relying on quantum sensorstechnology to study space-time and gravitation. We willpresent the progress of this first step towards a Laboratory forGravitation and Atom-interferometric Research in Europe.