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Quantum theory for the Josephson phase dynamics in a d-dot

โœ Scribed by T. Koyama; M. Machida; M. Kato; T. Ishida

Publisher
Elsevier Science
Year
2005
Tongue
English
Weight
124 KB
Volume
426-431
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

We formulate a canonical quantum theory for the square-shape closed 0-p junction system in the absence of an external magnetic field. When the quantum tunneling takes place between the two degenerate classical ground states having different current patterns, the system forms a quantum two-level system. The Hamiltonian which describes the quantum two-level system is derived from the generalized sine-Gordon equation.

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