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Coherent Control of Two‐Photon Transitions
Author(s) -
Garro N.,
Kennedy S.P.,
Heberle A.P.,
Phillips R.T.
Publication year - 2000
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200009)221:1<385::aid-pssb385>3.0.co;2-a
Subject(s) - excited state , coherent control , physics , exciton , atomic physics , amplitude , dipole , photon , interference (communication) , field (mathematics) , coherent states , energy (signal processing) , condensed matter physics , quantum , quantum mechanics , channel (broadcasting) , mathematics , engineering , pure mathematics , electrical engineering
Abstract Dipole‐forbidden transitions have been investigated by means of coherent control techniques. The 2p heavy‐hole excitonic transition of a GaAs/AlGaAs multiple quantum well system was excited by a pair of phase‐locked pulses with their energy at half the transition energy. The temporal evolution of the amplitude of coherent control, monitored in the secondary emission at the 1s heavy‐hole exciton energy, showed two different contributions: one at the frequency of the optical field, and a second one at twice that frequency, from the interference of the excitonic polarisation. The latter component contains, besides the energy of the dark transition, information about the dynamics of the state.