Generation of polarization entanglement from spatially-correlated photons in spontaneous parametric down-conversion

TL;DR

This paper introduces a new method to generate polarization entanglement from spatially-correlated photon pairs using spontaneous parametric down-conversion and a modified Michelson interferometer, demonstrating conversion from spatial correlation to polarization entanglement.

Contribution

The paper presents a novel scheme for converting spatial correlations into polarization entanglement in photon pairs, experimentally realized with a modified interferometer.

Findings

Successful experimental demonstration of the scheme

Effective conversion from spatial correlation to polarization entanglement

Potential applications in quantum communication and information processing

Abstract

We propose a novel scheme to generate polarization entanglement from spatially-correlated photon pairs. We experimentally realized a scheme by means of a spatial correlation effect in a spontaneous parametric down-conversion and a modified Michelson interferometer. The scheme we propose in this paper can be interpreted as a conversion process from spatial correlation to polarization entanglement.