Freiburg 2024 – scientific programme
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A: Fachverband Atomphysik
A 8: Precision Measurements I (joint session Q/A)
A 8.5: Talk
Monday, March 11, 2024, 18:00–18:15, HS 1221
Quantum Memory Enhanced Velocimetry — •Yagiz Murat1, Arash Ahmadi1, Mustafa Gündoğan1, and Markus Krtutzik1,2 — 1Humboldt Universität zu Berlin, Institut für Physik — 2The Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik
Optical interferometry is crucial in motion sensing. Recent progress has utilized electromagnetically induced transparency (EIT) to measure the velocity of a moving medium, leveraging Fizeau’s light-dragging effect. This novel approach opens new possibilities for quantum optical methods in velocimetry, Our work is centered around EIT-based quantum memories. Light storage is realized by tuning a probe and a control field to the Zeeman-split levels of the D1 transition line of cesium atoms (F=4 → F′=3). By monitoring the phase difference of the beating signal of the probe field with a reference field, before and after storage of the probe field, displacement of the cesium vapor cell can be measured down to the nanometer scale. This work contributes to the frontiers of quantum optics and motion sensing, promising advancements in precision measurements. This work has been funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under grant number 448245255.
Keywords: Fizeau Effect; Light Dragging; Velocimeter; Quantum Memory; EIT