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Generalized Rabi oscillations in a three‐level metastable system under periodic and quasiperiodic perturbations
Author(s) -
Adhikari S.,
Nath D. N.,
Bhattacharyya S. P.
Publication year - 1996
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/(sici)1097-461x(1996)58:1<3::aid-qua1>3.0.co;2-1
Subject(s) - quasiperiodic function , metastability , rabi cycle , physics , autocorrelation , perturbation (astronomy) , monochromatic color , rabi frequency , wave function , quantum mechanics , quantum , atomic physics , condensed matter physics , mathematics , optics , laser , statistics
The quantum dynamics of prototypical three‐level metastable system under external perturbations, both time‐independent and time‐dependent, are studied numerically as well as analytically. The regular Rabi oscillations generated in the system under a monochromatic perturbation are shown to develop additional features when the system has a metastable state. The autocorrelation function of ψ (t) reveals nondecaying, almost quasiperiodic, behavior in such systems. The Rabi oscillations turn more complex when a bichromatic perturbation with two incommensurate frequencies is allowed to interact with the three‐level system, irrespective of the presence or absence of a metastable state. A rapid decay in the autocorrelation function of the wavefunction [ψ (t) ] is observed in such cases. © 1996 Wiley & Sons, Inc.