Macroscopic Bell States and the Higher-Order Degree of Polarization

TL;DR

This paper investigates the polarization characteristics of macroscopic Bell states, revealing hidden polarization effects in triplet states and introducing an arbitrary-order degree of polarization to analyze these quantum states.

Contribution

It introduces a novel measure for the arbitrary-order degree of polarization and applies it to macroscopic Bell states, highlighting differences between triplet and singlet states.

Findings

Triplet states exhibit hidden polarization in higher orders.

Singlet states are nearly unpolarized up to fourth order.

A new arbitrary-order polarization degree is defined and utilized.

Abstract

We study polarization properties of the macroscopic analogues of two-photon Bell states. The effect of hidden polarization, i.e., polarization in the second (and higher) orders in the intensity is observed for the triplet states while the singlet one is demonstrated to be nearly unpolarized at least up to the fourth order. The arbitrary-order degree of polarization is introduced and applied to the macroscopic Bell states.