Generalized switchable coupling for superconducting qubits using double resonance
S. Ashhab, Shigemasa Matsuo, Noriyuki Hatakenaka, Franco Nori
DOI 10.1103/PhysRevB.74.184504 · Physical Review B
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Abstract
We propose a method for switchable coupling between superconducting qubits using double resonance. The interqubit coupling is achieved by applying near-resonant oscillating fields to the two qubits. The deviation from resonance relaxes the criterion of strong driving fields while still allowing for a fully entangling two-qubit gate. This method avoids some of the shortcomings of previous proposals for switchable coupling. We discuss the possible application of our proposal to a pair of inductively coupled flux qubits, and we consider the extension to phase qubits.
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