Compound Josephson-junction coupler for flux qubits with minimal crosstalk
Compound Josephson-junction coupler for flux qubits with minimal crosstalk
An improved tunable coupling element for building networks of coupled rf-SQUID flux qubits has been experimentally demonstrated. This new form of coupler, based upon the compound Josephson junction rf-SQUID, provides a sign and magnitude tunable mutual inductance between qubits with minimal nonlinear crosstalk from the coupler tuning parameter into the …