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-dependent Schrödinger equation demonstrate that these operations can be performed with good fidelity.
Strauch
Frederick W
FW
Department of Physics, University of Maryland, College Park, Maryland 20742-4111, USA. fstrauch@physics.umd.edu
Johnson
Philip R
PR
Dragt
Alex J
AJ
Lobb
C J
CJ
Anderson
J R
JR
Wellstood
F C
FC