Bonn 2025 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 25: Poster – Cold Atoms and Molecules, Matter Waves (joint session Q/A/MO)

Q 25.21: Poster

Dienstag, 11. März 2025, 14:00–16:00, Tent

Stochastic phase noise in momentum-dependent Rabi oscillations — •Samuel Böhringer, Fabian Kienle, and Richard Lopp — Institut für Quantenphysik and Center for Integrated Quantum Science and Technology (IQST), Universität Ulm, Albert-Einstein-Allee 11, D-89069 Ulm, Germany

The laser-driven two-level system is the most fundamental model in quantum optics. It plays a central role in the description of beam splitters and mirrors in matter-wave interferometry and various other experiments with the ultimate goal to achieve high-precision measurements. A limiting factor to the precision of these measurements is laser phase noise. While there are numerous models for the description of laser phase noise in driven systems, they are lacking the inclusion of the center-of-mass (COM) degrees of freedom. However, the COM-motion is crucial for many application. We provide a theoretical model for phase noise in Rabi oscillations including the COM degrees of freedom. In particular, we derive and solve a set of stochastic differential equations that describe the evolution of momentum-dependent observables during a laser pulse with phase noise.

Keywords: Phase Noise; Light-matter Interaction; Rabi Oscillations; Quantum Clocks; Stochastic Processes