Coherent control of a resonance lifetime with laser pulses

Quantum control of the lifetime of the Br 2 ( B , v ′ = 35 ) – Ne ground van der Waals resonance is investigated theoretically by creating coherent superpositions of v ′ - 1 resonances overlapping with the v ′ resonance. This control scheme exploits the quantum interference occurring between the overlapping resonances, which is controlled by varying the width of the laser pulse creating the superposition state. For v ′ = 35 the v ′ resonance overlaps more strongly and with a higher number of v ′ - 1 resonances than in the previously studied v ′ = 27 case. It is found that as a consequence of this stronger overlapping regime, the effects of control over the resonance lifetime become more intense.