Generation of correlated biphoton via four-wave mixing coexisting with multi-order fluorescence processes
Abstract
We investigate the parametrically amplified four-wave mixing, spontaneous parametric four-wave-mixing, second- and fourth-order fluorescence signals coming from the four-level double-Λ electromagnetically induced transparency system of a hot 85Rb atomic vapor. The biphoton temporal correlation is obtained from spontaneous parametric four-wave-mixing and fourth-order fluorescence processes. Meanwhile, we first observed the biphoton Rabi oscillation with a background of linear Rayleigh scattering and uncorrelated second-order fluorescence. The outcomes of the investigation may contribute potentially to the applications in dense coding quantum communication systems.
- Publication:
-
Scientific Reports
- Pub Date:
- December 2019
- DOI:
- 10.1038/s41598-019-56567-9
- Bibcode:
- 2019NatSR...920065L