Experimental generation of tripartite polarization entangled states of bright optical beams

TL;DR

This paper reports the experimental creation of tripartite polarization entangled states of bright optical beams, which are crucial for quantum networks involving atomic ensembles, demonstrating their potential for quantum information transfer.

Contribution

The study experimentally demonstrates tripartite polarization entanglement of bright optical beams at Rubidium resonance, transforming them into multipartite continuous variable polarization entanglement.

Findings

Confirmed tripartite polarization entanglement using extended criteria.

Generated entangled states at Rubidium D1 line frequency.

Utilized beam splitter network for state transformation.

Abstract

The multipartite polarization entangled states of bright optical beams directly associating with the spin states of atomic ensembles are one of the essential resources in the future quantum information networks, which can be conveniently utilized to transfer and convert quantum states across a network composed of many atomic nodes. In this letter, we present the experimental demonstration of tripartite polarization entanglement described by Stokes operators of optical field. The tripartite entangled states of light at the frequency resonant with D1 line of Rubidium atoms are transformed into the continuous variable polarization entanglement among three bright optical beams via an optical beam splitter network. The obtained entanglement is confirmed by the extended criterion for polarization entanglement of multipartite quantized optical modes.