Mainz 2017 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 29: Quantum Gases: Bosons IV

Q 29.7: Vortrag

Dienstag, 7. März 2017, 16:00–16:15, P 204

Anomalous screening of quantum impurities by a neutral environment — •Enderalp Yakaboylu and Mikhail Lemeshko — Institute of Science and Technology Austria (IST Austria), Klosterneuburg, Austria

We investigate the dynamics of a rotating impurity interacting with a neutral many-body bosonic bath in the presence of an oscillating electric field. Even though light cannot interact with the neutral bath, we show that the neutral bath itself is capable to induce a drastic screening of the impurity's dipole moment and polarizability due to angular momentum transfer between the impurity and the bath. Consequently, all phenomena related to the light-molecule interaction can be generalized to the interaction in the presence of a neutral many-body environment by means of the screened dipole moment and the screened polarizability of the impurity. In particular, we showed how a neutral many-body environment affects the effective Rabi frequency, the geometric phase, and the molecular alignment.