Lower order and higher order entanglement in $87Rb$ $5S-5P-5D$ hyperfine manifold modeled as a four-wave mixing process

TL;DR

This paper explores the generation of both lower and higher order intermodal entanglement in the 87Rb 5S-5P-5D hyperfine manifold modeled as a four-wave mixing process, revealing potential for complex quantum correlations.

Contribution

It demonstrates the possibility of generating various orders of intermodal and trimodal entanglement in 87Rb hyperfine states using a perturbative four-wave mixing model.

Findings

Lower and higher order intermodal entanglement observed between different mode pairs.

Trimodal entanglement involving pump, signal, and idler modes identified.

Entanglement occurs under experimentally relevant parameters.

Abstract

Possibilities of generation of lower order and higher order intermodal entanglement in 87Rb 5S-5P-5D hyperfine manifold are rigorously investigated using Sen-Mandal perturbative technique by showing the equivalence of the system with the four-wave mixing (FWM) process. The investigation has revealed that for a set of experimentally realizable/relevant parameters we can observe lower order and higher order intermodal entanglement between pump and signal modes, signal and idler modes, and idler and pump modes in a FWM process associated with the 87Rb 5S-5P-5D hyperfine manifold. In addition, trimodal entanglement involving pump, signal and idler modes is also reported.