Radio-frequency method for investigation of quantum properties of superconducting structures.

Radio-frequency method for investigation of quantum properties of superconducting structures.

Il’ichev, E. ; Smirnov, A.Yu. ; Grajcar, M. ; Izmalkov, A. ; Born, D. ; Oukhanski, N. ; Wagner, Th. ; Krech, W. ; Meyer, H.-G. ; Zagoskin, A.

Тема: Сверхпроводимость и мезоскопические структуры

Інший ID: PACS: 74.50.+r, 85.25.–j

URI: http://dspace.nbuv.gov.ua/handle/123456789/119837

Посилання: Radio-frequency method for investigation of quantum properties of superconducting structures. / E. Il’ichev, A.Yu. Smirnov, M. Grajcar, A. Izmalkov, D. Born, N. Oukhanski, Th. Wagner, W. Krech, H.-G. Meyer, and A. Zagoskin // Физика низких температур. — 2004. — Т. 30, № 7-8. — С. 823-833. — Бібліогр.: 38 назв. — англ.

Підтримка: We are grateful to our colleagues M.H.S. Amin, Ya.S. Greenberg, H.E. Hoenig, U. Hübner, A. Maassen van den Brink, T. May, V.I. Shnyrkov, and I.N. Zhilyaev for their help and contribution to this work on different stages. Helpful discussions with D.V. Averin, G. Blatter, M. Feigel’man, M.V. Fistul, V.B. Geshkenbein, A.J. Leggett, Yu. Makhlin, A.N. Omelyanchouk, A. Shnirman, P.C.E. Stamp, S. Uchaikin, A.V. Ustinov, A.D. Zaikin, and A.B. Zorin are gratefully acknowledged.

Дата: 2004

Завантажень: 475

Radio-frequency method for investigation of quantum properties of superconducting structures.

Анотація:

We implement the impedance measurement technique (IMT) for characterization of interferometer- type superconducting qubits. In the framework of this method, the interferometer loop is inductively coupled to a high-quality tank circuit. We show that the IMT is a powerful tool to study a response of externally controlled two-level system to different types of excitations. Conclusive information about qubits is obtained from the read-out of the tank properties.

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