@article{2007-yoon-an-j-of-phy-conf-ser-v80-p012046, Abstract = {A quantitative study on characteristics of a magneto-optical trap with a single or a few atoms is presented. A very small number of 85Rb atoms were trapped in a micron-size magneto-optical trap with a high magnetic-field gradient. In order to find the optimum condition for a single-atom trap, we have investigated how the number of atoms and the size of atomic cloud change as various experimental parameters, such as a magnetic-field gradient and the trapping laser intensity and detuning. The averaged number of atoms was measured very accurately with a calibration procedure based on the single-atom saturation curve of resonance fluorescence. In addition, the number of atoms in a trap could be controlled by suppressing stochastic loading events by means of a real-time active feedback on the magnetic-field gradient.}, Author = {Yoon, S. AND Choi, Y. AND Park, S. AND Ji, W. AND Lee, J. AND An, K.}, Journal = {J. of Phys.: Conf. Ser. }, Pages = {012046}, Title = {{Characteristics of single-atom trapping in a magneto-optical with a high magnetic-field gradient}}, Volume = {80}, Year = {2007} }