SAMOP 2023 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
Q: Fachverband Quantenoptik und Photonik
Q 59: Poster IV
Q 59.15: Poster
Thursday, March 9, 2023, 16:30–19:00, Empore Lichthof
Large-momentum-transfer atom interferometers with µrad-accuracy using Bragg diffraction — •Jan-Niclas Siemß1,2, Florian Fitzek1,2, Christian Schubert2,3, Ernst M. Rasel2, Naceur Gaaloul2, and Klemens Hammerer1 — 1Institut für Theoretische Physik, Leibniz Universität Hannover — 2Institut für Quantenoptik, Leibniz Universität Hannover — 3Deutsches Zentrum für Luft- und Raumfahrt (DLR), Institut für Satellitengeodäsie und Inertialsensorik
Large-momentum-transfer atom interferometers that employ elastic Bragg scattering from light waves are among the most precise quantum sensors available. To increase their accuracy from the mrad to the µrad regime, it is necessary to understand the rich phenomenology of Bragg interferometers, which can be quite different from that of a standard two-mode interferometer. We develop an analytic model for the interferometer signal
and demonstrate its accuracy using extensive numerical simulations. Our analytic treatment enables the determination of the atomic projection noise limit of an LMT Bragg interferometer and provides the means to saturate this limit. It allows suppression of systematic phase errors by two orders of magnitude down to a few µrad using appropriate pulse parameters.
This work is supported through the DFG via QuantumFrontiers (EXC 2123), and DQ-mat (CRC1227) within Projects No. A05, No. B07, and No. B09.