Hannover 2016 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

Q: Fachverband Quantenoptik und Photonik

Q 11: Poster: Quantum Optics and Photonics I

Q 11.11: Poster

Montag, 29. Februar 2016, 16:30–19:00, Empore Lichthof

Rydberg quantum optics in ultracold gases — Hannes Gorniaczyk, Christoph Tresp, Ivan Mirgorodskiy, Christian Zimmer, •Asaf Paris-Mandoki, and Sebastian Hofferberth — 5. Physikalisches Institut, Universität Stuttgart, Germany

Mapping the strong interaction between Rydberg excitations in ultracold atomic ensembles onto single photons via electromagnetically induced transparency enables the realization of optical nonlinearities which can modify light on the level of individual photons.

Following previous work [1] in which a single-photon transistor was realized, we investigate the use of an electrically tuned Förster-resonance to improve the transistor performance. The strong amplification of this transistor allows performing fine-structure-resolving spectroscopy of the Förster resonance.

We also present our investigation of anisotropic interaction between individual polaritons coupled to Rydberg D-states. The anisotropy breaks the one-dimensionality of the system even when the propagating light is focussed more tightly than the Rydberg blockade volume. This effect provides an additional tool for engineering photon-photon interaction in a Rydberg system [2].

[1] H. Gorniaczyk, C. Tresp, J. Schmidt, H. Fedder, and S. Hofferberth, ``Single Photon Transistor Mediated by Inter-State Rydberg Interaction'', Phys. Rev. Lett. 113, 053601 (2014).

[2] C. Tresp, P. Bienias, S. Weber, H. Gorniaczyk, I. Mirgorodskyi, H. P. Büchler, S. Hofferberth, ``Dipolar Dephasing of Rydberg D-state polaritons'', Phys. Rev. Lett 115, 083602 (2015).