Creating multiphoton-polarization bound-entangled states

TL;DR

This paper proposes experimental schemes to create various classes of bound entangled states using photon polarization, advancing the practical realization of these exotic quantum states.

Contribution

It introduces novel methods for generating multiple classes of bound entangled states with photon polarization, inspired by recent laboratory experiments.

Findings

Schemes for creating Acin-Bruss-Lewenstein-Sanpara states

Methods for generating Dur's states

Protocols for producing Lee-Lee-Kim bound entangled states

Abstract

Bound entangled states are the exotic objects in the entangled world. They require entanglement to create them, but once they are formed, it is not possible to locally distill any free entanglement from them. It is only until recently that a few bound entangled states were realized in the laboratory. Motivated by these experiments, we propose schemes for creating various classes of bound entangled states with photon polarization. These include Acin-Bruss-Lewenstein-Sanpara states, Dur's states, Lee-Lee-Kim bound entangled states, and an unextendible-product-basis bound entangled state.