Cold atom interferometers (AIs) have proven to be extremely sensitive and accurate inertial
sensors measuring gravity [1], gravity gradients [2] and rotations [3]. Unlike classical sensors,
they do not require any calibration and exhibit an inherent long-term stability and accuracy : they
are promising candidates for geodesy, geophysics or inertial navigation. We present our progress
towards the development of a cold-atom inertial measurement unit, a device measuring each
component of acceleration and rotation. We demonstrate two techniques allowing to perform
acceleration measurements using a Mach-Zehnder type AI in a single diffraction regime, even
for atoms with close to zero velocity. The first technique lifts the degeneracy between the
two Raman transitions \u00b1\u00afhkeff by using a frequency chirp on the Raman lasers. In the second
technique, we use the selection rules of the \u03c3+\u03c3\u2212 Raman transitions between the states F =
1, mF = \u00b11 and F = 2, mF = \u00b11 to select between one of the two possible transitions. We
compare the performances and the bias induced by both methods and highlight their relevance
for multiaxis inertial sensors or atom interferometry in a microgravity environment.<\/p>\n\n\n\n
[1] A. Peters, K. Y. Chung, and S. Chu. High-precision gravity measurements using atom interferometry.
Metrologia 38, 25 (2001).
[2] J. M. McGuirk, G. T. Foster, J. B. Fixler, M. J. Snadden, and M. A. Kasevich. Sensitive absolutegravity gradiometry using atom interferometry. Phys. Rev. A 65, 033608 (2002).
[3] I. Dutta, D. Savoie, B. Fang, B. Venon, C. L. Garrido Alzar, R. Geiger, and A. Landragin. Continuous
Cold-Atom Inertial Sensor with 1 nrad\/sec Rotation Stability. Phys. Rev. Lett. 116, 183003 (2016).
[4] Y. Bidel, N. Zahzam, C. Blanchard, A. Bonnin, M. Cadoret, A. Bresson, D. Rouxel and M. F.
Lequentrec-Lalancette. Absolute marine gravimetry with matter-wave interferometry. Nat. Commun.
9, 627 (2018).
[5] I. Perrin, J. Bernard,Y. Bidel, A. Bonnin, N. Zahzam, C. Blanchard, A. Bresson, and M. Cadoret.
Zero-velocity atom interferometry using a retroreflected frequency-chirped laser. Phys. Rev. A 100,
053618 (2019).<\/p>\n\n\n\n
Cold atom interferometers (AIs) have proven to be extremely sensitive and accurate inertial
\nsensors measuring gravity [1], gravity gradients [2] and rotations [3]. Unlike classical sensors,
\nthey do not require any calibration and exhibit an inherent long-term stability and accuracy : they
\nare promising candidates for geodesy, geophysics or inertial navigation. We present our progress
\ntowards the development of a cold-atom inertial measurement unit, a device measuring each
\ncomponent of acceleration and rotation. We demonstrate two techniques allowing to perform
\nacceleration measurements using a Mach-Zehnder type AI in a single diffraction regime, even
\nfor atoms with close to zero velocity. The first technique lifts the degeneracy between the
\ntwo Raman transitions \u00b1\u00afhkeff by using a frequency chirp on the Raman lasers. In the second
\ntechnique, we use the selection rules of the \u03c3+\u03c3\u2212 Raman transitions between the states F =
\n1, mF = \u00b11 and F = 2, mF = \u00b11 to select between one of the two possible transitions. We
\ncompare the performances and the bias induced by both methods and highlight their relevance
\nfor multiaxis inertial sensors or atom interferometry in a microgravity environment.
\n[1] A. Peters, K. Y. Chung, and S. Chu. High-precision gravity measurements using atom interferometry.
\nMetrologia 38, 25 (2001).
\n[2] J. M. McGuirk, G. T. Foster, J. B. Fixler, M. J. Snadden, and M. A. Kasevich. Sensitive absolutegravity gradiometry using atom interferometry. Phys. Rev. A 65, 033608 (2002).
\n[3] I. Dutta, D. Savoie, B. Fang, B. Venon, C. L. Garrido Alzar, R. Geiger, and A. Landragin. Continuous
\nCold-Atom Inertial Sensor with 1 nrad\/sec Rotation Stability. Phys. Rev. Lett. 116, 183003 (2016).
\n[4] Y. Bidel, N. Zahzam, C. Blanchard, A. Bonnin, M. Cadoret, A. Bresson, D. Rouxel and M. F.
\nLequentrec-Lalancette. Absolute marine gravimetry with matter-wave interferometry. Nat. Commun.
\n9, 627 (2018).
\n[5] I. Perrin, J. Bernard,Y. Bidel, A. Bonnin, N. Zahzam, C. Blanchard, A. Bresson, and M. Cadoret.
\nZero-velocity atom interferometry using a retroreflected frequency-chirped laser. Phys. Rev. A 100,
\n053618 (2019).<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-727","post","type-post","status-publish","format-standard","hentry","category-fomo2021-abstract"],"jetpack_featured_media_url":"","uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"ashe-slider-full-thumbnail":false,"ashe-full-thumbnail":false,"ashe-list-thumbnail":false,"ashe-grid-thumbnail":false,"ashe-single-navigation":false},"uagb_author_info":{"display_name":"Cretan Matterwaves","author_link":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/author\/bec\/"},"uagb_comment_info":0,"uagb_excerpt":"Cold atom interferometers (AIs) have proven to be extremely sensitive and accurate inertial sensors measuring gravity [1], gravity gradients [2] and rotations [3]. Unlike classical sensors, they do not require any calibration and exhibit an inherent long-term stability and accuracy : they are promising candidates for geodesy, geophysics or inertial navigation. We present our progress…","jetpack_sharing_enabled":true,"publishpress_future_action":{"enabled":false,"date":"2026-07-29 19:43:16","action":"category","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/comments?post=727"}],"version-history":[{"count":1,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/727\/revisions"}],"predecessor-version":[{"id":729,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/727\/revisions\/729"}],"wp:attachment":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/media?parent=727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/categories?post=727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/tags?post=727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}