Phys. Rev. Lett. 91, 167005 (2003) [4 pages]Quantum Logic Gates for Coupled Superconducting Phase QubitsReceived 2 March 2003; published 16 October 2003 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 Schrödinger equation demonstrate that these operations can be performed with good fidelity. © 2003 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.91.167005
DOI:
10.1103/PhysRevLett.91.167005
PACS:
74.50.+r, 03.67.Lx, 85.25.Cp
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