Coherent control of atomic excitation using off-resonant strong few-cycle pulses

Abstract

We study the dynamics of a two-level system driven by an off-resonant few-cycle pulse which has a phase jump $\varphi$ at $t=t_0$, in contrast to many cycle pulses, under non rotating-wave approximation (NRWA). We give a closed form analytical solution for the evolution of the probability amplitude $|C_a(t)|$ for the upper level. Using the appropriate pulse parameters like phase-jump $\varphi$, jump time $t_0$, pulse width $\tau$, frequency $\nu$ and Rabi frequency ${\Omega }_0$ the population transfer, after the pulse is gone, can be optimized and for the pulse considered here, enhancement of $10^6-10^8$ factor was obtained.

arXiv comment5 Pages, 7 Figures

References in corpus (3)

• Coherent Excitation of a Two-Level Atom driven by a far off-resonant Classical Field: Analytical Solutions
• Analytical solutions for a two-level system driven by a class of chirped pulses
• Carrier-envelope phase sensitive inversion in two-level systems

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• Few-cycle excitation of atomic coherence: A closed-form analytical solution beyond the rotating-wave approximation