10.6084/m9.figshare.1012229.v1
A Jaouadi
M Desouter-Lecomte
R Lefebvre
O Atabek
Same as in figure 5, but with different initial states
2013
IOP Publishing
Floquet scheme
cooling strategies
wavepacket dynamics
vibrational states
population inversion
laser field
wavepacket propagation
proposals rest
coalescing resonances
population inversions
Floquet model
wp
adiabatic Floquet theory
6. Dotted
2013-06-26 00:00:00
article
https://iop.figshare.com/articles/_Same_as_in_figure_a_href_http_iopscience_iop_org_0953_4075_46_14_145402_article_jpb470387f5_target_/1012229
<p><strong>Figure 6.</strong> Same as in figure <a href="http://iopscience.iop.org/0953-4075/46/14/145402/article#jpb470387f5" target="_blank">5</a>, but with different initial states. (a) The initial state is <em>v</em> = 6. Dotted blue line for P_{6,6}^{{\rm WP}}, solid black line for P_{7,6}^{{\rm WP}}, dashed red line for P_{8,6}^{{\rm WP}}. (b) The initial state is <em>v</em> = 9. Dashed-dotted green line for P_{9,9}^{{\rm WP}}, dashed red line for P_{8,9}^{{\rm WP}}.</p> <p><strong>Abstract</strong></p> <p>Laser control schemes for selective population inversion between molecular vibrational states have recently been proposed in the context of molecular cooling strategies using the so-called exceptional points (corresponding to a couple of coalescing resonances). All these proposals rest on the predictions of a purely adiabatic Floquet theory. In this work we compare the Floquet model with an exact wavepacket propagation taking into account the accompanying non-adiabatic effects. We search for signatures of a given exceptional point in the wavepacket dynamics and we discuss the role of the non-adiabatic interaction between the resonances blurring the ideal Floquet scheme. Moreover, we derive an optimal laser field to achieve, within acceptable compromise and rationalizing the unavoidable non-adiabatic contamination, the expected population inversions. The molecular system taken as an illustrative example is H_{2}^{+}.</p>