Enhancing Continuous Variable Quantum Teleportation using Non-Gaussian Resources

TL;DR

This paper demonstrates that using non-Gaussian resource states in continuous variable quantum teleportation significantly enhances transmission range and fidelity in both fiber-based and satellite communications.

Contribution

It introduces the use of various non-Gaussian states as resources in CV teleportation, showing substantial improvements over traditional Gaussian states.

Findings

Teleportation range increased by ~40% in fiber communications

Satellite teleportation range extended from 700 km to over 1200 km

Non-Gaussian resources outperform Gaussian two-mode squeezed vacuum states

Abstract

Continuous Variable (CV) non-Gaussian resources are fundamental in the realization of quantum error correction for CV-based quantum communications and CV-based computing. In this work, we investigate the use of CV non-Gaussian states as quantum teleportation resource states in the context of the transmission of coherent and squeezed states through noisy channels. We consider an array of different non-Gaussian resource states, and compute the fidelity of state teleportation achieved for each resource. Our results show that the use of non-Gaussian states presents a significant advantage compared to the traditional resource adopted for CV teleportation; the Gaussian two-mode squeezed vacuum state. In fiber-based quantum communications, the range of quantum teleportation is increased by approximately 40% via the use of certain non-Gaussian states. In satellite-to-ground quantum communications, for aperture configurations consistent with the Micius satellite, the viable range of quantum teleportation is increased from 700 km to over 1200 km. These results represent a significant increase in the performance of pragmatic and realizable quantum communications in both terrestrial and space-based networks.