Photon correlation transients in a weakly blockaded Rydberg ensemble

The nonlinear and non-local effects in atomic Rydberg media under electromagnetically induced transparency (EIT) make it a versatile platform for fundamental studies and applications in quantum information. In this paper, we study the dynamics of a Rydberg-EIT system in an ensemble that allows for m...

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Hauptverfasser: Möhl, Charles (VerfasserIn) , Spong, Nicholas L. R. (VerfasserIn) , Jiao, Yuechun (VerfasserIn) , So, Chloe (VerfasserIn) , Ilieva, Teodora (VerfasserIn) , Weidemüller, Matthias (VerfasserIn) , Adams, Charles S. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 23 March 2020
In: Journal of physics. B, Atomic, molecular and optical physics
Year: 2020, Jahrgang: 53, Heft: 8
ISSN:1361-6455
DOI:10.1088/1361-6455/ab728f
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1088/1361-6455/ab728f
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Verfasserangaben:Charles Möhl, Nicholas L.R. Spong, Yuechun Jiao, Chloe So, Teodora Ilieva, Matthias Weidemüller and Charles S. Adams

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520 |a The nonlinear and non-local effects in atomic Rydberg media under electromagnetically induced transparency (EIT) make it a versatile platform for fundamental studies and applications in quantum information. In this paper, we study the dynamics of a Rydberg-EIT system in an ensemble that allows for more than one Rydberg excitation in the propagation direction. The density of two-level atoms is such that transient superradiant effects occur. We experimentally observe a cross-over between coherent collective emission (‘flash’) of two-level atoms to a Rydberg dressed regime (‘dressed flash’) under EIT condition. The complex dynamics are characterised using both intensity and time correlation measurements. We show that while steady-state EIT gives a second order correlation g (2) = 0.79 ± 0.04, the Rydberg-dressed flash exhibits anti-bunching down to 0.2 ± 0.04. 
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