Quantum size dependent optical nutation in CdSe/ZnS/CdSe quantum dot quantum well

The energy spectra and the optical nutation effect in CdSe/ZnS/CdSe quantum dot quantum well with core/shell/shell structure have been numerically studied and analyzed based on quantum theory and the effective mass approximation. For solving the uncertain coefficients A0, A1, B0, B1, A2, B2 and E, a new method has been used in the paper. It has been shown that the optical nutation signals of the CdSe/ZnS/CdSe quantum dot quantum well are dependent on the quantum size of the quantum dot quantum well and there exists an optimized condition for induced nutation signal, which is quite sensitive to the shells’ sizes of the QDQW with the core/shell/shell structure.