Driven systems and the Lax formula
Document Type
Article
Publication Date
5-25-2000
Abstract
One of the most widely used tools in quantum optics, the Lax formula for two-time correlations, is studied. The formula is then applied to two driven quantum systems: the oscillator and the two-level atom. Through a comparison with exact results for the oscillator, it is shown explicitly that the Lax formula is a weak coupling approximation that does not include quantum corrections on the Onsager regression hypothesis of classical statistical physics. For the two-level atom, the calculation of the well known Burshtein-Mollow spectrum of resonance fluorescence is extended to the case of non-zero temperature.
Publication Source (Journal or Book title)
Optics Communications
First Page
451
Last Page
461
Recommended Citation
Ford, G., & O'Connell, R. (2000). Driven systems and the Lax formula. Optics Communications, 179 (1), 451-461. https://doi.org/10.1016/S0030-4018(99)00608-2