We demonstrate experimentally how the process of Stimulated Raman Adiabatic Passage (STIRAP) can be utilized for efficient coherent internal state transfer in single trapped and laser-cooled 40Ca+ ions. The transfer from the D3/2 to the D5/2 state, is detected by a fluorescence measurement revealing the population not transfered to the D5/2 state. A coherent population transfer efficiency at the level of 95 % in a setup allowing for the internal state detection of individual ions in a string has been obtained.
@article{arxiv.quant-ph/0608089,
title = {Efficient coherent internal state transfer in trapped ions using Stimulated Raman Adiabatic Passage},
author = {Jens L. Sørensen and Ditte Møller and Theis Iversen and Jakob B. Thomsen and Frank Jensen and Peter Staanum and Dirk Voigt and Michael Drewsen},
journal= {arXiv preprint arXiv:quant-ph/0608089},
year = {2009}
}