Dark-time decay of the retrieval efficiency of light stored as a Rydberg excitation in a noninteracting ultracold gas

17 Jan 2020 Schmidt-Eberle Steffen Stolz Thomas Rempe Gerhard Dürr Stephan

We study the dark-time decay of the retrieval efficiency for light stored in a Rydberg state in an ultracold gas of $^{87}$Rb atoms based on electromagnetically induced transparency (EIT). Using low atomic density to avoid dephasing caused by atom-atom interactions, we measure a $1/e$ time of 30 $\mu$s for the $80S$ state in free expansion... (read more)

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