Advances in Quantum Teleportation

TL;DR

This paper reviews the fundamental concepts, experimental progress, and technological challenges of quantum teleportation, highlighting its critical role in advancing quantum communication, computing, and networks.

Contribution

It provides a comprehensive overview of theoretical foundations, experimental implementations, and future challenges in quantum teleportation technologies.

Findings

Summarizes key experimental achievements in quantum teleportation.

Analyzes advantages and disadvantages of various physical platforms.

Discusses open issues and future directions in the field.

Abstract

Quantum teleportation is one of the most important protocols in quantum information. By exploiting the physical resource of entanglement, quantum teleportation serves as a key primitive in a variety of quantum information tasks and represents an important building block for quantum technologies, with a pivotal role in the continuing progress of quantum communication, quantum computing and quantum networks. Here we review the basic theoretical ideas behind quantum teleportation and its variant protocols. We focus on the main experiments, together with the technical advantages and disadvantages associated with the use of the various technologies, from photonic qubits and optical modes to atomic ensembles, trapped atoms, and solid-state systems. Analysing the current state-of-the-art, we finish by discussing open issues, challenges and potential future implementations.