Freiburg 2024 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 69: Precision Measurements III (joint session Q/A)
Q 69.5: Vortrag
Freitag, 15. März 2024, 15:30–15:45, HS 1221
Optically guided BEC interferometry with a single wavelength — •Simon Kanthak1, Rui Li2, Ekim Hanimeli3, Mikhail Cheredinov2, Matthias Gersemann2, Sven Herrmann3, Naceur Gaaloul2, Sven Abend2, Ernst M. Rasel2, Markus Krutzik1, and the QUANTUS team1,2,3,4,5 — 1Institut für Physik, HU Berlin — 2Institut für Quantenoptik, LU Hannover — 3ZARM, Universität Bremen — 4Institut für Quantenphysik, Uni Ulm — 5Institut für Angewandte Physik, TU Darmstadt
Precision sensing with Bose-Einstein condensates (BECs) has been achieved in macroscopic interferometers with underlying large scale enclosed space-time areas. As an alternative approach, trapped atom systems offer the opportunity for BEC sensors in more compact packages. This requires an optical guide, crossed beams and beam splitters usually operated at different wavelengths.
We report on an optically guided BEC interferometer operated with a single wavelength. To this end, atoms are first Bose condensed and delta-kick collimated using the magnetic potentials supplied by an atom chip. A single far-detuned focused beam in a linear retro-reflector configuration then provides both the tools to levitate as well as symmetrically split and recombine the matter-wave packets to form a guided Mach-Zehnder type atom interferometer.
This work is supported by the German Space Agency (DLR) with funds provided by the Federal Ministry for Economic Affairs and Climate Action (BMWK) under grant number DLR 50WM2250B (QUANTUS+).
Keywords: Atom interferometry; Bose-Einstein condensates; Optical dipole trap; Atom-chip trap; Double-Bragg diffraction