Atom counting statistics in ensembles of interacting Rydberg atoms |
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Authors: | Liebisch T Cubel Reinhard A Berman P R Raithel G |
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Affiliation: | FOCUS Center and Michigan Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA. |
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Abstract: | We show that the probability distributions for the number of Rydberg excitations in small ensembles of cold atoms, excited using short (100 ns) laser pulses, can be highly sub-Poissonian. The phenomenon occurs if the atom density and the principal quantum number of the excited Rydberg level are sufficiently high. Our observations are attributed to a blockade of the Rydberg atom excitation. |
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