title: Atom-Chip Fountain Gravimeter.
abstract: We demonstrate a quantum gravimeter by combining the advantages of an atom chip for the generation, delta-kick collimation, and coherent manipulation of freely falling Bose-Einstein condensates (BECs) with an innovative launch mechanism based on Bloch oscillations and double Bragg diffraction. Our high-contrast BEC interferometer realizes tens of milliseconds of free fall in a volume as little as a one centimeter cube and paves the way for measurements with sub-μGal accuracies in miniaturized, robust devices.
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: S
authors.initials: S
authors.lastname: Abend
authors.affiliation: ZARM, Universität Bremen, Am Fallturm, D-28359 Bremen, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Gebbe
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Gersemann
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Ahlers
authors.affiliation: ZARM, Universität Bremen, Am Fallturm, D-28359 Bremen, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Müntinga
authors.affiliation: Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany.|Department of Physics and Max Planck Centre for Extreme and Quantum Photonics, University of Ottawa, 25 Templeton Street, Ottawa, ON K1N 6N5, Canada.
authors.forename: E
authors.initials: E
authors.lastname: Giese
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Gaaloul
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Schubert
authors.affiliation: ZARM, Universität Bremen, Am Fallturm, D-28359 Bremen, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Lämmerzahl
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Ertmer
authors.affiliation: Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany.|Texas A&M University Institute for Advanced Study (TIAS), Institute for Quantum Science and Engineering (IQSE) and Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843-4242, USA.
authors.forename: W P
authors.initials: WP
authors.lastname: Schleich
authors.affiliation: Institut für Quantenoptik, Leibniz Universität Hannover, Welfengarten 1, D-30167 Hannover, Germany.
authors.forename: E M
authors.initials: EM
authors.lastname: Rasel