Optimising graph codes for measurement-based loss tolerance
Quantum Physics
2022-12-12 v1
Abstract
Graph codes play an important role in photonic quantum technologies as they provide significant protection against qubit loss, a dominant noise mechanism. Here, we develop methods to analyse and optimise measurement-based tolerance to qubit loss and computational errors for arbitrary graph codes. Using these tools we identify optimised codes with up to 12 qubits and asymptotically-large modular constructions. The developed methods enable significant benefits for various photonic quantum technologies, as we illustrate with novel all-photonic quantum repeater states for quantum communication and high-threshold fusion-based schemes for fault-tolerant quantum computing.
Cite
@article{arxiv.2212.04834,
title = {Optimising graph codes for measurement-based loss tolerance},
author = {Tom J. Bell and Love A. Pettersson and Stefano Paesani},
journal= {arXiv preprint arXiv:2212.04834},
year = {2022}
}