Bright six-partite continuous variable entanglement using cascaded four-wave mixing processes in a four-level atomic system

TL;DR

This paper proposes a theoretical method to generate bright six-partite continuous-variable entanglement using cascaded four-wave mixing in a four-level atomic system, analyzed through optimized inseparability criteria.

Contribution

It introduces a novel approach to produce multi-partite entanglement in atomic systems via cascaded nonlinear optical processes.

Findings

Six-partite entanglement can be generated above threshold.

The entanglement is verified using Van Loock and Furusawa criteria.

The scheme is feasible with current atomic systems.

Abstract

We theoretically show that bright six-partite continuous-variable entanglement can be generated using cascaded four-wave mixing effects of third-order nonlinearity atomic systems above threshold. The six-partite continuous-variable entanglement among the six cavity fields with different frequencies is analyzed by applying optimized inseparability criteria proposed by Van Loock and Furusawa.