Local cloning of CAT states

TL;DR

This paper investigates the feasibility of exactly cloning orthogonal three-qubit CAT states using LOCC with limited entanglement, classifies which states can be cloned, and extends findings to n-qubit systems.

Contribution

It provides a classification of three-qubit CAT states based on their clonability under LOCC and extends the analysis to larger qubit systems.

Findings

Certain orthogonal three-qubit CAT states can be cloned under LOCC.

Some states cannot be cloned under LOCC restrictions.

Results extend to n-qubit CAT states.

Abstract

In this Letter we analyze the (im)possibility of the exact cloning of orthogonal three-qubit CAT states under local operation and classical communication(LOCC) with the help of a restricted entangled state. We also classify the three-qubit CAT states that can(not) be cloned under LOCC restrictions and extend the results to the n-qubit case.