LTS junction technology for RSFQ and qubit circuit applications

The potentials of LTS junction technology and electronics offer innovative solutions for the processing of quantum information in RSFQ and qubit circuits. We discuss forthcoming approaches based on standard SIS technology and addressed to the development of new superconducting device concepts. The c...

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Published inPhysica. C, Superconductivity Vol. 445-448; pp. 930 - 936
Main Authors Buchholz, F.-Im, Balashov, D.V., Dolata, R., Hagedorn, D., Khabipov, M.I., Kohlmann, J., Zorin, A.B., Niemeyer, J.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.10.2006
Subjects
Josephson qubits
Rapid single flux quantum circuits
Superconducting devices
Superconducting devices
Rapid single flux quantum circuits
Josephson qubits
85.25.Cp
85.25.Hv
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Summary:The potentials of LTS junction technology and electronics offer innovative solutions for the processing of quantum information in RSFQ and qubit circuits. We discuss forthcoming approaches based on standard SIS technology and addressed to the development of new superconducting device concepts. The challenging problem of reducing back action noise of the RSFQ circuits deteriorating coherent properties of the qubit is currently solved by implementing Josephson junctions with non-linear shunts based on LTS SIS-SIN technology. Upgraded NbAlOx trilayer technology enables the fabrication of high-quality mesoscopic Josephson junction transistors down to the nanometer range suitable for a qubit-operation regime. As applications, circuit concepts are presented which combine superconducting devices of different nature.
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ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2006.05.059