Stimulated Raman adiabatic passage with partially coherent laser fields
- 4 April 2002
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 65 (4), 043409
- https://doi.org/10.1103/physreva.65.043409
Abstract
In this paper we discuss the effect of phase noise upon the efficiency of population transfer produced by stimulated Raman adiabatic passage (STIRAP). To allow an adjustable cross-correlation of the two fields we consider the pump and Stokes pulses to be derived from a single phase-diffusing exponentially correlated laser, but we allow some time delay T between the noise signals. We present examples of Monte Carlo simulations, showing unexpected regularities in the dependence of efficiency upon pulse area for partially cross-correlated fields: efficiency does not monotonically increase with increasing pulse area, as would be expected. We explain these, and other properties, by using a simple model of pulse shapes to derive analytic expressions for efficiency. Although derived for a specific analytic form, the formulas also provide a useful description of transfer efficiency by other pulse shapes. We also obtain an estimate of the fundamental limit on the transfer efficiency with STIRAP, based on the Schawlow-Townes limit to laser bandwidths.Keywords
This publication has 21 references indexed in Scilit:
- Coherent population transfer among quantum states of atoms and moleculesReviews of Modern Physics, 1998
- Adiabatic population transfer in the three-level Λ-system: two-photon lineshapeOptics Communications, 1997
- Noise in strong laser-atom interactions: Phase telegraph noisePhysical Review A, 1984
- Noise in strong laser-atom interactions: Frequency fluctuations and nonexponential correlationsPhysical Review A, 1984
- The effects of laser field fluctuations on coherent population trappingJournal of Physics B: Atomic and Molecular Physics, 1982
- Population trapping and ultranarrow Raman lineshapes induced by phase-fluctuating fieldsOptics Communications, 1982
- -Level Coherence Vector and Higher Conservation Laws in Quantum Optics and Quantum MechanicsPhysical Review Letters, 1981
- Rate of resonant two-photon ionization in the presence of a partially coherent radiation fieldPhysical Review A, 1978
- Atomic Relaxation in the Presence of Intense Partially Coherent Radiation FieldsPhysical Review Letters, 1976
- Double optical resonancePhysical Review A, 1976