K J Weatherill et al 2008 J. Phys. B: At. Mol. Opt. Phys. 41 201002 doi:10.1088/0953-4075/41/20/201002
K J Weatherill, J D Pritchard, R P Abel, M G Bason, A K Mohapatra and C S Adams
Show affiliationsWe study electromagnetically induced transparency (EIT) of a weakly interacting cold Rydberg gas. We show that for Rydberg states with principal quantum numbers in the range n = 19–26, the onset of interactions is manifest as a depopulation of the Rydberg state. In the limit of a weak probe where the depopulation effect is negligible, we observe no evidence of interaction-induced decoherence and obtain a narrow Rydberg dark resonance with a linewidth of <600 kHz.
32.80.Rm Multiphoton ionization and excitation to highly excited states
Issue 20 (28 October 2008)
Received 14 August 2008
Published 1 October 2008
K J Weatherill et al 2008 J. Phys. B: At. Mol. Opt. Phys. 41 201002
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