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Rydberg blockade in an ultracold strontium gas revealed by two-photon excitation dynamics

We demonstrate the interaction-induced blockade effect in an ultracold 88Sr gas via studying the time dynamics of a two-photon excitation to the triplet Rydberg series 5sns3S1 for five different principal quantum numbers n ranging from 19 to 37. By using a multipulse excitation sequence to increase...

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Main Authors: Qiao, Chang (Author) , Tan, Canzhu (Author) , Siegl, Julia (Author) , Hu, Fachao (Author) , Niu, Zhijing (Author) , Jiang, Yuhai (Author) , Weidemüller, Matthias (Author) , Zhu, Bing (Author)
Format: Article (Journal)
Language:English
Published: 21 June 2021
In: Physical review
Year: 2021, Volume: 103, Issue: 6, Pages: 1-10
ISSN:2469-9934
DOI:10.1103/PhysRevA.103.063313
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevA.103.063313
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevA.103.063313
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Author Notes:Chang Qiao, Canzhu Tan, Julia Siegl, Fachao Hu, Zhijing Niu, Yuhai Jiang, Matthias Weidemüller, and Bing Zhu
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Summary:We demonstrate the interaction-induced blockade effect in an ultracold 88Sr gas via studying the time dynamics of a two-photon excitation to the triplet Rydberg series 5sns3S1 for five different principal quantum numbers n ranging from 19 to 37. By using a multipulse excitation sequence to increase the detection sensitivity, we could identify Rydberg-excitation-induced atom losses as low as <1%. Based on an optical Bloch equation formalism, treating the Rydberg-Rydberg interaction on a mean-field level, the van der Waals coefficients are extracted from the observed dynamics, which agree fairly well with ab initio calculations.
Item Description:Gesehen am 06.08.2021
Physical Description:Online Resource
ISSN:2469-9934
DOI:10.1103/PhysRevA.103.063313

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