Necessity of an energy barrier for self-correction of Abelian quantum doubles
Anna Kómár, Olivier Landon-Cardinal, Kristan Temme · Physical Review A · 2016
Quantum systems capable of preserving quantum information over an extended period of time without the need for external intervention are called self-correcting. The relation between the concept of ``energy barrier'' and self-correction is formally established here, an effort that will probably guide future developments in the design of self-correcting quantum memories.