Quantum logic gates for coupled superconducting phase qubits

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-de...

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Bibliographic Details
Published in:Physical review letters 2003-10, Vol.91 (16), p.167005-167005
Main Authors: Strauch, Frederick W, Johnson, Philip R, Dragt, Alex J, Lobb, C J, Anderson, J R, Wellstood, F C
Format: Article
Language:English
Online Access:Get full text
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Summary: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.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.91.167005