Quantum logic gates for coupled superconducting phase qubits

Details Quantum logic gates for coupled superconducting phase qubits Quantum logic gates for coupled superconducting phase qubits

2003-02-28

arxiv.org/abs/quant-ph/0303002v2

Phys. Rev. Lett. 91, 167005 (2003)

Physics

Quantum Physics

4 pages, 5 figures, revised for publication

Scientific paper

10.1103/PhysRevLett.91.167005

Based on a quantum analysis of two capacitively coupled current-biased Josephson junctions, we propose two fundamental two-qubit quantum logic gates. Each of these gates, when supplemented by single-qubit operations, is sufficient for universal quantum computation. Numerical solutions of the time-dependent Schroedinger equation demonstrate that these operations can be performed with good fidelity.

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