# Controlled Quantum Teleportation of Superposed Coherent State using GHZ Entangled Coherent State

## TL;DR

This paper presents a scheme for controlled quantum teleportation of superposed coherent states using GHZ entangled states, achievable with linear optics, achieving high fidelity close to unity for certain photon numbers.

## Contribution

It introduces a practical scheme for controlled teleportation of superposed coherent states utilizing GHZ entangled states with linear optical components.

## Key findings

- Fidelity approaches 0.99 for mean photon number of two.
- Scheme is experimentally feasible with standard linear optical components.
- High fidelity achieved for appreciable mean photon numbers.

## Abstract

Controlled quantum teleportation of superposed coherent states using GHZ entangled 3-mode coherent states is studied. Proposed scheme can be implemented experimentally using linear optical components such as a symmetric lossless beam splitter, two phase-shifters and two photon counters. Fidelity is found close to unity for appreciable mean number of photons in coherent states and is 0.99 for mean photon number equal to two.