Fig. 1

A schematic representation of a \(\Lambda\)-type five-level atom within a single-mode cavity field, filled with a Kerr medium, is illustrated in the diagram. Here is a diagram representing a five-level atomic system with all five atomic energy levels labeled by \(|1\rangle\), \(|2\rangle\), \(|3\rangle\), \(|4\rangle\), and \(|5\rangle\). The green arrows indicate possible transitions between these levels.