Quantum teleportation with relativistic communication from first principles

TL;DR

This paper presents a fully relativistic quantum teleportation protocol utilizing relativistic causal propagation of a quantum field, based on the Unruh-DeWitt detector model, ensuring the process adheres to relativistic principles.

Contribution

It introduces a genuinely relativistic quantum teleportation scheme using a detector-based approach, integrating quantum field theory and relativistic causality for the first time.

Findings

Protocol is fully relativistic by construction.

Uses Unruh-DeWitt qubit detector model for teleportation.

Leverages existing quantum information and quantum field theory frameworks.

Abstract

In this work we provide a genuine relativistic quantum teleportation protocol whose classical communication component makes use of relativistic causal propagation of a quantum field. Consequently, the quantum teleportation is fully relativistic by construction. Our scheme is based on Unruh-DeWitt qubit detector model, where the quantum state being teleported is associated to an actual qubit rather than a field mode considered by Alsing and Milburn [PRL 91, 180404 (2003)]. We show that the existing works in (relativistic) quantum information, including good definitions of one-shot and asymptotic channel capacities, as well as algebraic formulation of quantum field theory, already provide us with all the necessary ingredients to construct fundamentally relativistic teleportation protocol in relatively straightforward manner.