Topological states in superconducting and hybrid circuits

Electrons in so called topological superconductors, as well as lattices of interacting qubits, are predicted to undergo topological phase transitions in certain conditions. The ground state of these systems can be used to store and protect quantum information.

Circuits are called hybrid when topological superconductors interact with conventional superconducting circuits, in order to interface and manipulate the stored quantum information.