Mainz 2017 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 50: Matter Wave Optics

Q 50.3: Vortrag

Donnerstag, 9. März 2017, 15:00–15:15, P 11

Excitation of Strongly Interacting Moving Rydberg Atoms by Photon Recoil Momentum — •Razmik Unanyan — University of Kaiserslautern, Germany

Based on isomorphism between an ensembles of Rydberg atoms in resonant laser fields in the limit of complete dipole blocking and the Jaynes-Cummings model we propose a scheme for robust and efficient excitation of atomic Rydberg state by photon-momentum recoil. It is shown that the Doppler frequency shifts, due to atomic motion can play an important role in adiabatic population transfer processes of atomic internal states by a pair of laser fields. For the limiting case of slow atoms ( Doppler shift much smaller than the photon recoil energy) the Rydberg state does not become populated regardless of the order of switching of laser fields, while for the case of fast atoms interacting with the intuitive sequence of pulses, the target state is the state with single Rydberg excitation. It is shown that these processes are robust with respect to parameter fluctuations, such as the laser pulse area and the relative spatial offset (delay) of the laser beams.