Abstract The quantization scheme of a double-qubit structure with superconducting quantum interference devices (SQUIDs) is given. By introducing unitary matrices and using spectral decompositions, the Hamiltonian operator of the system is exactly formulated in compact forms in spin-1/2 notation. A scheme of designing controlled-phase-shift (CPS) gates is also proposed by using this circuit system.
Received: 21 March 2007
Revised: 02 April 2007
Accepted manuscript online:
PACS:
03.67.Lx
(Quantum computation architectures and implementations)
Fund: Project supported by the
National Natural Science Foundation of China (Grant No 10574060)
and the Natural Science Foundation (Grant No Y2004A09) of
Shandong Province, China.
Cite this article:
Liang Bao-Long(梁宝龙) and Wang Ji-Suo(王继锁) Quantization of the double-qubit structure and quantum computation 2007 Chinese Physics 16 3097
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