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Hannover 2020 – scientific programme

The DPG Spring Meeting in Hannover had to be cancelled! Read more ...

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Q: Fachverband Quantenoptik und Photonik

Q 39: Posters: Quantum Optics and Photonics III

Q 39.22: Poster

Wednesday, March 11, 2020, 16:30–18:30, Empore Lichthof

Three-Photon Electromagnetically Induced Transparency with Cold Rydberg AtomsYagiz Oyun1, Ozgur Cakir2, and •Sevilay Sevincli11Izmir Institute of Technology, Department of Photonics, 35430 Urla, Izmir, Turkey — 2Izmir Institute of Technology, Department of Physics, 35430 Urla, Izmir, Turkey

Electromagnetically induced transparency (EIT) is a quantum coherence phenomenon, in which different excitation paths interfere destructively, canceling out the absorption of the medium for probe laser. Rydberg-EIT media have been used for different applications to gain better understanding of quantum many body interactions since EIT was observed with Rydberg atoms in a two-photon excitation scheme. Dressed state EIT in a four-level scheme was realized experimentally with thermal Cs atoms[1] recently. We investigate three-photon EIT in a cold atomic ensemble by proposing a self-consistent mean-field approach to understand the interaction effects on this system. We also apply the rate equation method to investigate the nonlinear properties of the system. We observed that as the interaction strength increases, transparency weakens as in the two-photon Rydberg-EIT systems, and transparency window broadens and shifts away from the resonance. We acknowledge support from Scientific and Technological Council of Turkey (TUBITAK) Grant No. 117F372.

[1] N. Sibalic, J. M. Kondo, C. S. Adams, K. J. Weatherill, Phys. Rev. A. 94, 033840 (2016).

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