Spontaneous emission from a ladder three-level atom in anisotropic photonic crystals
Department of Physics, Tongji University, Shanghai, 200092, P.R. China
2 Institute for Quantum Studies and Department of Physics, Texas A&M University, College Station, TX, 77843, USA
Published online: 22 December 2006
We investigate the spontaneous radiation from a ladder three-level atom embedded in a three-dimensional anisotropic photonic crystal with an external driving field. The properties of the spontaneous emission are dependent strongly on the relative position of the middle level from the band edge. Due to the Autler-Townes splitting by the action of the driving field, the external driving field can also affect the properties of the spontaneous emission. The population exchanged between the upper and the middle levels decreases as the detuning of the external driving field frequency from the corresponding transition frequency increases. The properties of the emission field can be changed or so much as controlled by choosing suitable intensity of the external driving field. The emission spectrum is more complex, and dependent on the location of the observer in this case.
PACS: 42.50.Dv – Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements / 32.80.Bx – Level crossing and optical pumping
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2006