# Experimental realization of quantum teleportation using coined quantum walks

## TL;DR

This paper demonstrates the experimental implementation of quantum teleportation using coined quantum walks on IBM quantum devices, successfully teleporting single, two, and three-qubit states, including Bell, W, and GHZ states.

## Contribution

It is the first experimental realization of quantum teleportation via coined quantum walks on real quantum hardware, extending previous theoretical proposals.

## Key findings

- Successful teleportation of single-qubit states
- Teleportation of multi-qubit states including Bell, W, and GHZ states
- Implementation on IBM quantum computers and simulators

## Abstract

The goal of teleportation is to transfer the state of one particle to another particle. In coined quantum walks, conditional shift operators can introduce entanglement between position space and coin space. This entanglement resource can be used as a quantum channel for teleportation, as proposed by Wang, Shang and Xue [Quantum Inf. Process. 16, 221 (2017)]. Here, we demonstrate the implementation of quantum teleportation using quantum walks on a five-qubit quantum computer and a 32-qubit simulator provided by IBM quantum experience beta platform. We show the teleportation of single-qubit, two-qubit and three-qubit quantum states with circuit implementation on the quantum devices. The teleportation of Bell, W and GHZ states has also been demonstrated as special cases of the above states.