# Design and experimental realization of an optimal scheme for teleportion of an $n$-qubit quantum state

## TL;DR

This paper presents an optimized quantum teleportation scheme for n-qubit states, demonstrating resource efficiency and experimental validation for 2-qubit states with high fidelity on IBM quantum hardware.

## Contribution

It introduces a resource-optimal quantum teleportation circuit for n-qubit states and experimentally validates it for 2-qubit states on a superconducting quantum computer.

## Key findings

- The scheme requires fewer quantum resources than previous methods.
- High-fidelity teleportation achieved for 2-qubit states.
- The scheme's relevance extends to controlled and bidirectional teleportation.

## Abstract

An explicit scheme (quantum circuit) is designed for the teleportation of an $n$-qubit quantum state. It is established that the proposed scheme requires an optimal amount of quantum resources, whereas larger amount of quantum resources has been used in a large number of recently reported teleportation schemes for the quantum states which can be viewed as special cases of the general $n$-qubit state considered here. A trade off between our knowledge about the quantum state to be teleported and the amount of quantum resources required for the same is observed. A proof of principle experimental realization of the proposed scheme (for a 2-qubit state) is also performed using 5-qubit superconductivity-based IBM quantum computer. Experimental results show that the state has been teleported with high fidelity. Relevance of the proposed teleportation scheme has also been discussed in the context of controlled, bidirectional, and bidirectional-controlled state teleportation.