Engineered Topological Quantum Networks*

Contemporary quantum devices suffer from our inability to control quantum noise. Hypothesised emergent condensed matter excitations, such as Majorana modes, offer in principle protection against the effects of noise since they are protected by the system's symmetries. However, such native topological particles have proven extremely difficult to identify, verify and control. In parallel to these developments, topology has been successfully used in classical metamaterials and topological phenomena originally thought of as purely quantum have been observed and reproduced. In this work, we apply the principles of classical topological metamaterial design to the engineering of novel quantum devices. Specifically, we utilise topology appropriately in order to control quantum systems in the presence of noise. We design engineered topological quantum networks consisting of experimentally accessible quantum device components and simulate their ability to transfer quantum information in a topologically protected manner under realistic experimental conditions. We present a thorough proposal for the experimentally verifiable quantum device where quantum information is transferred as an emergent effect of the topological structure of the quantum network.