摘要
Violations of Bell inequality, Cauchy-Schwarz inequality and entanglement in a two-mode three-level atomic system are investigated. It is shown that there are some states, which are entangled but do not violate Bell inequality in this system. Moreover, the relations of violations of Bell inequality, Cauchy-Schwarz inequality, and entanglement are discussed in detail.
基金
Supported by the National Natural Science Foundation of China under Grants Nos. 11047190 and 10474025
the Innovation Program of Shanghai Municipal Education Commission under Grant No. 11YZ216
