1.5um Polarization-Entangled Bell States Generation Based on Birefringence in High Nonlinear Microstructure Fiber

TL;DR

This paper demonstrates a method to generate polarization-entangled Bell states using birefringence in high nonlinear microstructure fiber, offering a simple, efficient, and compact fiber-based photon pair source.

Contribution

It introduces a novel approach leveraging birefringence in microstructure fiber for polarization-entangled photon pair generation, with experimental validation.

Findings

Successful generation of polarization-entangled Bell states

Control of entanglement via pump polarization

Potential for compact fiber-based quantum sources

Abstract

Polarization-entangled photon pair generation based on two scalar scattering processes of the vector four photon scattering has been demonstrated experimentally in high nonlinear microstructure fiber with birefringence. By controlling the pump polarization state, polarization-entangled Bell states can be realized. It is provides a simple way to realize efficient and compact fiber based polarization-entangled photon pair sources.