Quantum information processing using Josephson junctions coupled through cavities

Details Quantum information processing using Josephson junctions coupled through cavities Quantum information processing using Josephson junctions coupled through cavities

2003-04-28

arxiv.org/abs/quant-ph/0304173v2

Phys. Rev. A 68, 034303 (2003)

Physics

Quantum Physics

5 pages, to appear in Phys Rev A; typos corrected, solutions in last eqs. corrected

Scientific paper

10.1103/PhysRevA.68.034303

Josephson junctions have been shown to be a promising solid-state system for implementation of quantum computation. The significant two-qubit gates are generally realized by the capacitive coupling between the nearest neighbour qubits. We propose an effective Hamiltonian to describe charge qubits coupled through the 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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