Quantum Error Models and Error Mitigation for Long-Distance Teleportation Architectures

TL;DR

This paper develops error models and discusses error mitigation strategies for a quantum teleportation architecture designed for long-distance communication, involving entangled photon sources and quantum memories.

Contribution

It introduces error models specific to a long-distance quantum teleportation setup and explores error correction and purification methods to enhance performance.

Findings

Error models for teleportation architecture are established.

Error mitigation strategies like quantum error correction are discussed.

Extension to GHZ state transmission is analyzed.

Abstract

A quantum communication architecture is being developed for long-distance, high-fidelity qubit teleportation. It uses an ultrabright narrowband source of polarization-entangled photons, plus trapped-atom quantum memories, and it is compatible with long-distance transmission over standard telecommunication fiber. This paper reports error models for the preceding teleportation architecture, and for an extension thereto which enables long-distance transmission and storage of Greenberger-Horne-Zeilinger states. The use of quantum error correction or entanglement purification to improve the performance of these quantum communication architectures is also discussed.