Stationary and slow light effects are of great interest for quantum information applications. Using laser-cooled Rb87 atoms, we performed side imaging of our atomic ensemble under slow and stationary light conditions, which allows direct comparison with numerical models. The polaritons were generated using electromagnetically induced transparency (EIT), with stationary light generated using counter-propagating control fields. By controlling the power ratio of the two control fields, we show fine control of the group velocity of the stationary light. We also compare the dynamics of stationary light using monochromatic and bichromatic control fields. Our results show negligible difference between the two situations, in contrast to previous work in EIT-based systems.
Bibliographical noteFunding Information:
We thank JR Ott, AS Sørensen and their team for very helpful discussions on the role of higher-order spatial frequencies in the atomic coherence. Our work was funded by the Australian Research Council (ARC) (CE110001027, FL150100019).
© 2017 IOP Publishing Ltd.
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Materials Science (miscellaneous)
- Physics and Astronomy (miscellaneous)
- Electrical and Electronic Engineering