Atomphoton, two-mode entanglement and two-mode squeezing in the presence of cross-Kerr nonlinearity
The interaction of two quantized fields and three-level quantum system in a \(\Lambda \)-type configuration is investigated in the presence of cross-Kerr nonlinearity. We consider three models of coupling for the atomphoton interaction. First, we study the dynamical behavior of the atomphoton entanglement and show that increasing the cross-Kerr nonlinearity results in different behaviors in three considered models. Moreover, it is demonstrated that the two quantized modes can be entangled, on the other hand, by applying a classical driving field to the lower levels. Increasing the classical driving field destroys the long time atomphoton entanglement. Our results show that an oscillatory two-mode squeezing can be generated in the absence of a driving classical field and the cross-Kerr nonlinearity.
two-mode entanglement two-mode squeezing cross-kerr atomphoton entanglement