1. Zero-velocity atom interferometry using a retroreflected frequency chirped laser
- Author
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I. Perrin, J. Bernard, Y. Bidel, A. Bonnin, N. Zahzam, C. Blanchard, A. Bresson, M. Cadoret, ONERA - The French Aerospace Lab [Châtillon], ONERA, Laboratoire commun de métrologie LNE-CNAM (LCM), Laboratoire National de Métrologie et d'Essais [Trappes] (LNE )-Conservatoire National des Arts et Métiers [CNAM] (CNAM), Conservatoire National des Arts et Métiers [CNAM] (CNAM), DPHY, ONERA, Université Paris Saclay [Palaiseau], and ONERA-Université Paris-Saclay
- Subjects
Atom interferometer ,Atomic Physics (physics.atom-ph) ,FOS: Physical sciences ,Accelerometer ,7. Clean energy ,01 natural sciences ,010305 fluids & plasmas ,law.invention ,Physics - Atomic Physics ,symbols.namesake ,Acceleration ,Optics ,Matter waves and collective properties of cold atoms and molecules ,law ,0103 physical sciences ,Phase noise ,Chirp ,Physics::Atomic Physics ,010306 general physics ,Wavefront ,Physics ,business.industry ,Laser ,[PHYS.PHYS.PHYS-GEN-PH]Physics [physics]/Physics [physics]/General Physics [physics.gen-ph] ,symbols ,Raman spectroscopy ,business - Abstract
Atom interferometry using stimulated Raman transitions in a retroreflected configuration is the first choice in high precision measurements because it provides low phase noise, high quality Raman wavefront and simple experimental setup. However, it cannot be used for atoms at zero velocity because two pairs of Raman lasers are simultaneously resonant. Here we report a method which allows to lift this degeneracy by using a frequency chirp on the Raman lasers. Using this technique, we realize a Mach-Zehnder atom interferometer hybridized with a force balanced accelerometer which provides horizontal acceleration measurements with a short-term sensitivity of $3.2\times 10^{-5}$ m.s$^{-2}$/$\sqrt{Hz}$. We check at the level of precision of our experiment the absence of bias induced by this method. This technique could be used for multiaxis inertial sensors, tiltmeters or atom interferometry in a microgravity environment., Comment: 7 pages, 9 figures
- Published
- 2019
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