Quantum-information processing using Josephson junctions coupled through cavities
Shi-Liang Zhu, Z. D. Wang, Kaiyu Yang
DOI 10.1103/PhysRevA.68.034303 · Physical Review A
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Abstract
Josephson junctions have been shown to be a promising solid-state system for implementation of quantum computation. The two-qubit gates are generally realized by the capacitive coupling between the nearest-neighbor qubits. We propose an effective Hamiltonian to describe charge qubits coupled through the microwave cavity. We find that nontrivial two-qubit gates may be achieved by this coupling. The ability to interconvert localized charge qubits and flying qubits in the proposed scheme implies that quantum network can be constructed using this large scalable solid-state system.
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