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Floquet-Landau-Zener interferometry: Usefulness of the Floquet theory in pulse-laser-driven systems
- Source :
- Phys. Rev. Research 4, 033075 (2022)
- Publication Year :
- 2022
-
Abstract
- We develop the Landau-Zener transfer matrix theory for the instantaneous Floquet states (IFSs) for quantum systems driven by strong pulse lasers. Applying this theory to the pulse excitation probability in two-level quantum systems, we show unexpectedly good quantitative agreements for few-cycle pulses. This approach enables us to qualitatively understand the probability's peculiar behaviors as quantum path interference between IFSs. We also study the pulse-width dependence, finding that this Floquet-state interpretation remains useful for shorter pulses down to 2-cycle ones in the present model. These results imply that the Floquet theory is meaningful in experimental few-cycle lasers if applied appropriately in the sense of IFSs.<br />Comment: 9+6 pages, 12 figures; v2 reference added
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. Research 4, 033075 (2022)
- Publication Type :
- Report
- Accession number :
- edsarx.2202.04973
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevResearch.4.033075