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International Journal of Theoretical Physics

Quantization of the Single-qubit Structure with SQUID

Bao‐Long Liang, Ji‐Suo Wang, Xiang‐Guo Meng

Published Mar 7, 2007• 5 citations
Publisher
DOI
10.1007/s10773-006-9280-3

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In this paper, the number-phase quantization scheme of the mesoscopic circuit, which consists of a single-qubit structure with superconducting quantum interference device coupled with a super-conducting resonator, is given. By introducing a unitary matrix and by means of spectral decomposition, the Hamiltonian operator of the system is exactly formulated in compact forms in spin-1/2 notation. The eigenvalues and the eigenstates of the system are investigated. It is found that using this system the entangled states can not only be prepared, but also be manipulated by tuning the magnetic flux through the super-conducting loop.