Error Correcting the Control Unit in Global Control Schemes

摘要

Recent studies of globally controlled structures have culminated in atheoretical demonstration that fault-tolerant quantum computation can becarried out on a one--dimensional chain with control over two global fieldsonly. This required some patterns of classical states to localise operations,which were stabilised with the Zeno effect. However, it is impossible toachieve perfect stabilisation using this method, so error correction of thesestates is desirable, and is the focus this paper.