High-quality polarization entanglement state preparation and manipulation in standard telecommunication channels

TL;DR

This paper presents a simple, reliable method for generating high-quality polarization entanglement in telecom channels using standard fiber components, enabling efficient quantum communication.

Contribution

It introduces a novel, fully guided-wave approach for near-perfect polarization entanglement generation and manipulation in standard telecommunication channels.

Findings

Achieved near-perfect polarization entanglement quality.

Demonstrated state manipulation between bosonic and fermionic symmetries.

Validated the approach with two-photon interference experiments.

Abstract

We report a novel and simple approach for generating near-perfect quality polarization entanglement in a fully guided-wave fashion. Both deterministic pair separation into two adjacent telecommunication channels and the paired photons' temporal walk-off compensation are achieved using standard fiber components. Two-photon interference experiments are performed, both for quantitatively demonstrating the relevance of our approach, and for manipulating the produced state between bosonic and fermionic symmetries. The compactness, versatility, and reliability of this configuration makes it a potential candidate for quantum communication applications.