Entanglement measurement in a Cavity QED System
M. L. Terraciano, R. Olsen Knell, D. G. Norris, Jietai Jing, Luis A. Orozco, James Clemens, Perry R. Rice · 2007
We measure an entanglement witness of a cavity QED system with the cross correlation of its orthogonal modes. The driven mode has information about the field, while the nondriven about the atom through spontaneous emission.