Measurement of the magnetic dipole moment of the Cs $6s^{2}S_{1/2} \to 7s^{2}S_{1/2}$ transition using two-pathway coherent control

We present results of our laboratory measurements of the magnetic dipole transition moment for the $6s^{2}S_{1/2} \to 7s^{2}S_{1/2}$ transition in atomic Cesium. Our experimental scheme is based on a novel two-pathway coherent control scheme, in which two coherent laser fields, one the second harmonic of the other, are employed to excite three distinct optical interactions. Observations of the interference between these transitions allow a determination of the transition moment M$_{1}$. The use of two laser fields provides a decreased sensitivity to systematic errors, compared to other single-beam experiments on weak transition moments. Our measurement is in good agreement with, but of higher precision than, previous measurements, and serves as a benchmark of our technique and apparatus. With this system, we are working towards a new measurement on the Parity-Violation effect on the same transition.