Generalized switchable coupling for superconducting qubits using double resonance

Details Generalized switchable coupling for superconducting qubits using double resonance Generalized switchable coupling for superconducting qubits using double resonance

2006-05-28

arxiv.org/abs/cond-mat/0605685v2

Phys. Rev. B 74, 184504 (2006)

Physics

Condensed Matter

Superconductivity

7 pages, 4 figures

Scientific paper

10.1103/PhysRevB.74.184504

We propose a method for switchable coupling between superconducting qubits using double resonance. The inter-qubit 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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