Quantum control of superconducting phase qubits
Philip R. Johnson, Frederick W. Strauch, Alex J. Dragt, J. R. Anderson, Christopher J. Lobb, F. C. Wellstood · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2004
We describe quantum control for implementing fast universal quantum gates using Josephson junction-based phase qubits. We have determined the effects of quantum tunneling and leakage on the gate fidelity by performing nonperturbative simulations of the Schrodinger equation. Phase qubits are seen to have many attractive features, and an experimental demonstration of a simple phase-qubit quantum gate should be possible in the near future.