Error Models and Error Mitigation for Long-Distance, High-Fidelity Quantum Secret Sharing

摘要

A quantum communication architecture is being developed for long-distance, high-fidelity transmission and storage of Greenberger-Horne-Zeilinger states. This system 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. An error model for the preceding architecture is derived, and the use of quantum error correction or entanglement purification protocols to improve the performance of this quantum communication system is also discussed.