Low Temperature Physics: 33, 724 (2007); https://doi.org/10.1063/1.2780165 (21 pages)
Физика Низких Температур: Том 33, Выпуск 9 (Сентябрь 2007), c. 957-981    ( к оглавлению , назад )

Quantum bits with Josephson junctions
(Review Article)

G. Wendin and V.S. Shumeiko

Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, Sweden
E-mail: vitaly.shumeiko@mc2.chalmers.se

Received January 15, 2007


Recent demonstrations of macroscopic quantum coherence in Josephson junction based electronic circuits opened entirely new dimension for the research and applications in the established field of Josephson electronics. In this article we discuss basic Josephson circuits for qubit applications, methods of quantum description of these circuits, circuit solutions for qubit couplings. Principles of manipulation and readout of superconducting qubits are reviewed and illustrated with recent experiments with various qubit types.

PACS: 03.67.Lx Quantum computation;
PACS: 74.50.+r Tunneling phenomena; point contacts, weak links, Josephson effects;
PACS: 85.25.Dq Superconducting quantum interference devices (SQUIDs).

Key words: superconductivity, Josephson effect, qubit, quantum electrical circuits.