We reapply our approach to designing nanophotonic quantum memories to formulate an optical network that autonomously protects a single logical qubit against arbitrary single-qubit errors. Emulating the 9 qubit Bacon-Shor subsystem code, the network replaces the traditionally discrete syndrome measurement and correction steps by continuous, time-independent optical interactions and coherent feedback of unitarily processed optical fields.
@article{arxiv.1102.3143,
title = {Design of nanophotonic circuits for autonomous subsystem quantum error correction},
author = {Joseph Kerckhoff and Dmitri S. Pavlichin and Hamidreza Chalabi and Hideo Mabuchi},
journal= {arXiv preprint arXiv:1102.3143},
year = {2015}
}