Three-photon polarized entanglement and interference generated using six-wave mixing and polarized dressing atomic coherence control
Guangchen Lan, Siqiang Zhang, Siwei Xiang, Shucai Wang, Zhiqiang Luo, Irfan Ahmed, Yanpeng Zhang · OSA Continuum · 2019
In a spontaneous process, laser-polarized dressings produce characteristic triphoton waveforms regarding the oscillation period and coherence time. Correspondingly, circularly polarized dressings make it have longer oscillation periods compared to the effect of linearly polarized dressings attributed to dispersion relation changes, and shorter coherence times owing to the larger dressing field. Given that the optical response of the polarization state of incident light is the dressing field, we can control the averaged three-photon coincidence count rate by adjusting the polarization of the incident light. By performing quantum tomography, we can obtain W and W-like polarization entanglement states. Accordingly, strong and weak visibilities can be evoked for circularly and linearly polarized dressings.