Quantum-state-selective two-photon excitation of multilevel systems assisted by the Stark shift (Phys. Rev. A) - Bo Y. Chang et al.

Phys. Rev. A 75, 063405 (2007) (10 pages)

Quantum-state-selective two-photon excitation of multilevel systems assisted by the Stark shift

Bo Y. Chang
College of Environmental Science and Applied Chemistry (BK21), Kyung-Hee University, Gyeonggi-do 449-701, Republic of Korea

Hyeonho Choi and Seokmin Shin
School of Chemistry, Seoul National University, Seoul 151-747, Korea

Ignacio R. Sola
Departamento de Quimica Fisica, Universidad Complutense, 28040 Madrid, Spain

(Received 28 October 2006; revised 18 March 2007; published 6 June 2007)

Stark-chirped rapid adiabatic passage [T. Rickes et al., J. Chem. Phys. 113, 534 (2000); A. A. Rangelov et al. Phys. Rev. A 72, 053403 (2005)] has been proposed as a laser scheme that allows the optical excitation of atoms or molecules with high quantum yields. The laser control proceeds via adiabatic passage assisted by dynamic Stark shifts. We propose several extensions of the scheme with alternative sequences, by frequency tuning or by repeating the pulse sequences, in order to achieve fine state selectivity within multilevel structures and adiabatic passage of quantum superposition states. The efficiency and selectivity of the schemes is compared with that achieved by other optical coherent methods.

©2007 The American Physical Society

URL: http://link.aps.org/abstract/PRA/v75/e063405
doi:10.1103/PhysRevA.75.063405
PACS: 32.80.Qk, 33.80.Be, 42.50.Hz