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Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster resonances

Gorniaczyk, H.; Tresp, C.; Bienias, P.; Paris-Mandoki, A.; Li, Weibin; Mirgorodskiy, I.; Büchler, H. P.; Lesanovsky, Igor; Hofferberth, S.

Authors

H. Gorniaczyk

C. Tresp

P. Bienias

A. Paris-Mandoki

Weibin Li weibin.li@nottingham.ac.uk

I. Mirgorodskiy

H. P. Büchler

Igor Lesanovsky igor.lesanovsky@nottingham.ac.uk

S. Hofferberth



Abstract

We demonstrate experimentally that Stark-tuned Förster resonances can be used to substantially increase the interaction between individual photons mediated by Rydberg interaction inside an optical medium. This technique is employed to boost the gain of a Rydberg-mediated single-photon transistor and to enhance the non-destructive detection of single Rydberg atoms. Furthermore, our all-optical detection scheme enables high-resolution spectroscopy of two-state Förster resonances, revealing the fine structure splitting of high-n Rydberg states and the non-degeneracy of Rydberg Zeeman substates in finite fields. We show that the ∣50S1/2,48S1/2⟩↔∣49P1/2,48P1/2⟩ pair state resonance in 87Rb enables simultaneously a transistor gain G>100 and all-optical detection fidelity of single Rydberg atoms F>0.8. We demonstrate for the first time the coherent operation of the Rydberg transistor with G>2 by reading out the gate photon after scattering source photons. Comparison of the observed readout efficiency to a theoretical model for the projection of the stored spin wave yields excellent agreement and thus successfully identifies the main decoherence mechanism of the Rydberg transistor.

Journal Article Type Article
Publication Date Aug 12, 2016
Journal Nature Communications
Electronic ISSN 2041-1723
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 7
Article Number e12480
APA6 Citation Gorniaczyk, H., Tresp, C., Bienias, P., Paris-Mandoki, A., Li, W., Mirgorodskiy, I., …Hofferberth, S. (2016). Enhancement of Rydberg-mediated single-photon nonlinearities by electrically tuned Förster resonances. Nature Communications, 7, https://doi.org/10.1038/ncomms12480
DOI https://doi.org/10.1038/ncomms12480
Publisher URL http://www.nature.com/ncomms/2016/160812/ncomms12480/full/ncomms12480.html
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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