Optical control of the refractive index of a single atom |
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Authors: | Kampschulte Tobias Alt Wolfgang Brakhane Stefan Eckstein Martin Reimann René Widera Artur Meschede Dieter |
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Affiliation: | Institut für Angewandte Physik, Universit?t Bonn, Wegelerstrasse 8, D-53115 Bonn, Germany. kampschulte@iap.uni-bonn.de |
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Abstract: | We experimentally demonstrate the elementary case of electromagnetically induced transparency with a single atom inside an optical cavity probed by a weak field. We observe the modification of the dispersive and absorptive properties of the atom by changing the frequency of a control light field. Moreover, a strong cooling effect has been observed at two-photon resonance, increasing the storage time of our atoms twenty-fold to about 16 seconds. Our result points towards all-optical switching with single photons. |
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