Two-level Hamiltonian of a superconducting quantum point contact
D. A. Ivanov, M. V. Feigel’man
DOI 10.1103/PhysRevB.59.8444 · Physical Review B
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Abstract
In a superconducting quantum point contact, dynamics of the superconducting phase is coupled to the transitions between the subgap states. We compute this coupling and derive the two-level Hamiltonian of the contact.
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