Local Indistinguishability and Possibility of Hiding cbits in Activable Bound Entangled States

TL;DR

This paper proves the local indistinguishability of certain bound entangled states and demonstrates their potential for quantum data hiding, highlighting both their capabilities and limitations.

Contribution

It introduces a multipartite quantum data hiding scheme using activable bound entangled states and analyzes its effectiveness and constraints.

Findings

States are locally indistinguishable and maximally mixed

A quantum data hiding scheme is established using these states

The scheme's power and limitations are analyzed

Abstract

In this letter we prove local indistinguishability of four orthogonal activable bound entangled states shared among even number of parties. All reduced density matrices of such states are maximally mixed. We further proceed to establish a multipartite quantum data hiding scheme on those states and explore its power and limitations.