Interface Between Topological and Superconducting Qubits

Liang Jiang, Charles L. Kane, John Preskill

Published 2010-10-28, updated 2011-03-30Version 2

We propose and analyze an interface between a topological qubit and a superconducting flux qubit. In our scheme, the interaction between Majorana fermions in a topological insulator is coherently controlled by a superconducting phase that depends on the quantum state of the flux qubit. A controlled phase gate, achieved by pulsing this interaction on and off, can transfer quantum information between the topological qubit and the superconducting qubit.