Ultrafast coherent control of giant oscillating molecular dipoles in the presence of static electric fields

The following article appeared in Journal of Chemical Physic 139.8 (2013): 084306 and may be found at http://scitation.aip.org/content/aip/journal/jcp/139/8/10.1063/1.4818878We propose a scheme to generate electric dipole moments in homonuclear molecular cations by creating, with an ultrashort pump pulse, a quantum superposition of vibrational states on electronic states strongly perturbed by very strong static electric fields. By field-induced molecular stabilization, the dipoles can reach values as large as 50 Debyes and oscillate on a time-scale comparable to that of the slow vibrational motion. We show that both the electric field and the pump pulse parameters can be used to control the amplitude and period of the oscillation, while preventing the molecule from ionizing or dissociatingThis work was supported by the NRF grant funded by the Korean government (2007-0056343 and 2012M3C1A6035358), the Basic Science Research program funded by MEST (2010-0005143), the Advanced Grant of the European Research Council XCHEM 290853, the European grant MC-RG ATTOTREND, the European COST Actions CM0702 (CUSPFEL) and CM1204 (XLIC), the European ITN CORINF, the MICINN Project Nos. CTQ2012-36184, FIS2010-15127, and CSD 2007-00010 (Spain), and the ERA-Chemistry project PIM2010EEC-0075