Details

This Demonstration considers the evolution of the strontium atom under a multiple laser field. The energy level and laser fields are shown in the energy level diagram.

The master equation for a V-type three-level system is given by

,

where is the density matrix.

In the rotated frame, we can write the Hamiltonian

where the is a transition operator from state to state , namely,

,

and , and are the Rabi frequency, detuning and phase, respectively, of the radiation field coupling state to state .

According to the Lindblad equation, the spontaneous decay is determined from