Quantum teleportation of non-classical wave-packets, an effective multimode theory

TL;DR

This paper presents a simplified multimode theoretical model for broadband continuous variable quantum teleportation, analyzing effects of finite squeezing bandwidth and noise, and validating with recent experiments.

Contribution

It introduces an effective single-mode model for multimode teleportation that accounts for non-Gaussian states and experimental imperfections.

Findings

Finite squeezing bandwidth impacts teleportation fidelity.

External noise degrades quantum state quality.

Model aligns well with recent experimental data.

Abstract

We develop a simple and efficient theoretical model to understand the quantum properties of broadband continuous variable quantum teleportation. We show that, if stated properly, the problem of multimode teleportation can be simplified to teleportation of a single effective mode that describes the input state temporal characteristic. Using that model, we show how the finite bandwidth of squeezing and external noise in the classical channel affect the output teleported quantum field. We choose an approach that is especially relevant for the case of non-Gaussian non-classical quantum states and we finally back-test our model with recent experimental results.