Stochastic dynamics of a few sodium atoms in presence of a cold potassium cloud

Single particle resolution is a requirement for numerous experimental protocols that emulate the dynamics of small systems in a bath. Here, we accurately resolve through atom counting the stochastic dynamics of a few sodium atoms in presence of a cold potassium cloud. This capability enables us to r...

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Hauptverfasser: Bhatt, Rohit Prasad (VerfasserIn) , Kilinc, Jan (VerfasserIn) , Höcker, Lilo (VerfasserIn) , Jendrzejewski, Fred (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 14 February 2022
In: Scientific reports
Year: 2022, Jahrgang: 12, Pages: 1-11
ISSN:2045-2322
DOI:10.1038/s41598-022-05778-8
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1038/s41598-022-05778-8
Verlag, kostenfrei, Volltext: https://www.nature.com/articles/s41598-022-05778-8
Volltext
Verfasserangaben:Rohit Prasad Bhatt, Jan Kilinc, Lilo Höcker & Fred Jendrzejewski

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520 |a Single particle resolution is a requirement for numerous experimental protocols that emulate the dynamics of small systems in a bath. Here, we accurately resolve through atom counting the stochastic dynamics of a few sodium atoms in presence of a cold potassium cloud. This capability enables us to rule out the effect of inter-species interaction on sodium atom number dynamics, at very low atomic densities present in these experiments. We study the noise sources for sodium and potassium in a common framework. Thereby, we assign the detection limits to 4.3 atoms for potassium and 0.2 atoms (corresponding to 96% fidelity) for sodium. This opens possibilities for future experiments with a few atoms immersed in a quantum degenerate gas. 
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