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An echo experiment in a strongly interacting Rydberg gas by Raitzsch, Ulrich; Bendkowsky, Vera; Heidemann, Rolf; Butscher, Björn; Löw, Robert; Pfau, Tilman is a scholarly article available to read on EtoBox.

What is An echo experiment in a strongly interacting Rydberg gas about?

When ground state atoms are excited to a Rydberg state, van der Waals interactions among them can lead to a strong suppression of the excitation. Despite the strong interactions the evolution can still be reversed by a simple phase shift in the excitation laser field. We experimentally prove the coherence of the excitation in the strong blockade regime by applying an `optical rotary echo' technique to a sample of magnetically trapped ultracold atoms, analogous to a method known from nuclear magnetic resonance. We additionally measured the dephasing time due to the interaction between the Rydberg atoms.

Author

Raitzsch, Ulrich; Bendkowsky, Vera; Heidemann, Rolf; Butscher, Björn; Löw, Robert; Pfau, Tilman

Published

2007

Language

EN