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001-es BibID:	BIBFORM106858
035-os BibID:	(Wos)000727722900002 (Scopus)85120649595
Első szerző:	Tóth Attila (fizikus)
Cím:	Strong-field control by reverse engineering / Attila Tóth, András Csehi
Dátum:	2021
ISSN:	1050-2947 2469-9934
Megjegyzések:	Based on the idea of reverse engineering, we design an optimal laser pulse to control strong-field multiphoton atomic transitions. Starting from the time-dependent Schrödinger equation of the full system, we adiabatically eliminate the nonessential states and apply the rotating-wave approximation to arrive at an effective two-state representation that involves dynamic Stark shifts and multiphoton coupling. Solving this equation inversely for the field, we obtain an analytical laser pulse shape that is expected to induce the full system's evolution according to user-defined quantum pathways. In our procedure, the amplitude and phase of the laser pulse are engineered such that the dynamically shifted electronic states are resonantly coupled during the action of the pulse at each moment of time. As a result, the driven system evolves from an arbitrary initial population distribution to any desired final quantum state superposition at a predefined rate. The proposed scheme is demonstrated using the example of the 3s 4s two-photon transition of atomic sodium. By solving the time-dependent Schrödinger equation of the single-active electron with two different methods, either propagating time-dependent coefficients of many field-free states or directly propagating the three-dimensional electronic wave packet on a grid, we demonstrate the robustness as well as the limitations of the presented reverse engineering scheme.
Tárgyszavak:	Természettudományok Fizikai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Physical Review A. - 104 : 6 (2021), p. 063102. -
További szerzők:	Csehi András (1986-) (fizikus)
Pályázati támogatás:	EFOP-3.6.2-16-2017-00005 EFOP GINOP-2.3.6-15-2015-00001 GINOP
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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