Coherent Population Trapping with Controlled Interparticle Interactions

We investigate Coherent Population Trapping in a strongly interacting ultracold Rydberg gas. Despite the strong van der Waals interactions and interparticle correlations, we observe the persistence of a resonance with subnatural linewidth at the single-particle resonance frequency as we tune the int...

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Published inarXiv.org
Main Authors Schempp, H, Günter, G, Hofmann, C S, Giese, C, Saliba, S D, DePaola, B D, Amthor, T, Weidemüller, M, Sevinçli, S, Pohl, T
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 01.03.2010
Subjects
Physics - Atomic Physics
Trapping
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Summary:We investigate Coherent Population Trapping in a strongly interacting ultracold Rydberg gas. Despite the strong van der Waals interactions and interparticle correlations, we observe the persistence of a resonance with subnatural linewidth at the single-particle resonance frequency as we tune the interaction strength. This narrow resonance cannot be understood within a meanfield description of the strong Rydberg--Rydberg interactions. Instead, a many-body density matrix approach, accounting for the dynamics of interparticle correlations, is shown to reproduce the observed spectral features.
ISSN:2331-8422
DOI:10.48550/arxiv.0912.4099