Freiburg 2024 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 37: Ultra-cold Atoms, Ions and BEC IV (joint session A/Q)
A 37.1: Vortrag
Freitag, 15. März 2024, 11:00–11:15, HS 1098
Accurate and efficient Bloch-oscillation-enhanced atom interferometry — •Florian Fitzek1,2, Jan-Niclas Kirsten-Siemß2, Ernst M. Rasel2, Naceur Gaaloul2, and Klemens Hammerer1 — 1Institut für Theoretische Physik, Leibniz Universität Hannover, Germany — 2Institut für Quantenoptik, Leibniz Universität Hannover, Germany
Bloch oscillations of atoms in optical lattices offer a powerful technique to significantly enhance the sensitivity of atom interferometers by orders of magnitude. To fully exploit the potential of this method, an accurate theoretical description of losses and phases beyond current treatments is essential. In this work, we introduce a comprehensive theoretical framework for Bloch-oscillation-enhanced atom interferometry [Fitzek et al., arXiv:2306.09399]. We confirm its accuracy through comparison with an exact numerical solution of the Schrödinger equation [Fitzek et al., Sci Rep 10, 22120 (2020)]. Using our approach, we define the fundamental efficiency and accuracy limits of Bloch-oscillation-enhanced atom interferometers and establish design criteria to achieve their saturation. We compare these limits to current state-of-the-art atom interferometers and formulate requirements for the improvement of future quantum sensors.
This work is supported through the Deutsche Forschungsgemeinschaft (DFG) under EXC 2123 QuantumFrontiers, Project-ID 390837967 and under the CRC1227 within Project No. A05 as well as by the VDI with funds provided by the BMBF under Grant No. VDI 13N14838 (TAIOL).
Keywords: Atom interferometry; Bloch oscillations; Wannier-Stark states