We theoretically demonstrate that selective resonant excitation can be achieved in a dense collection of V-type three-level atoms by optimizing the pulse delay and peak intensity ratio of an applied phase-tailored ultrashort pulse pair. Near-dipole-dipole interaction plays an important role in the quantum control of selective excitations since it brings about an intrinsic frequency shift in the atomic resonance, which builds up various excitation pathways. As a consequence, we can control the quantum interference between various pathways by shaping the excitation pulse pair to steer the atomic excitation selectively toward a desired quantum state.
© 2005 Optical Society of America
(020.1670) Atomic and molecular physics : Coherent optical effects
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(270.1670) Quantum optics : Coherent optical effects
(320.2250) Ultrafast optics : Femtosecond phenomena
Han Xu and Heping Zeng, "Optical selectivity in optically dense media driven by optimized Gaussian-type ultrashort pulse pairs," Opt. Lett. 30, 1198-1200 (2005)