摘要
Some noclassical properties in electromagnetic field are investigated for the interaction of two-modes initially taken in coherent-state representation with the three-level -type atom, such as squeezing properties and violation of the Cauchy-Schwartz inequality. The enhancement of field squeezing is found by selective atomic measurement. The Cauchy-Schwartz inequality is violated by the application of the classical field followed by detection in excited state.
基金
The project supported by the Natural Science Foundation of Fujian Province under Grant .No. W0650011 and Funds from Fujian Department of Education under Grant No. JB06041
