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Q: Fachverband Quantenoptik und Photonik
Q 58: Poster: Quantum Optics and Photonics III
Q 58.31: Poster
Donnerstag, 14. März 2019, 16:15–18:15, S Atrium Informatik
Stable single light bullets in cold Rydberg gases — •Zhengyang Bai1, 2, Weibin Li2, and Guoxiang Huang1 — 1State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China — 2School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK
Realizing single light bullets and vortices that are stable in high dimensions is a long-standing goal in the study of nonlinear optical physics. On the other hand, the storage and retrieval of such stable high dimensional optical pulses may offer a variety of applications. Here we present a scheme to generate such optical pulses in a cold Rydberg atomic gas. By virtue of electromagnetically induced transparency, strong, long-range atom-atom interaction in Rydberg states is mapped to light fields, resulting in a giant, fast-responding nonlocal Kerr nonlinearity and the formation of light bullets and vortices carrying orbital angular momenta, which have extremely low generation power, very slow propagation velocity, and can stably propagate, with the stability provided by the combination of local and the nonlocal Kerr nonlinearities. We demonstrate that the light bullets and vortices obtained can be stored and retrieved in the system with high efficiency and fidelity. Our study provides a new route for manipulating high-dimensional nonlinear optical processes via the controlled optical nonlinearities in cold Rydberg gases.