Физика Низких Температур: Том 33, Выпуск 9 (Сентябрь 2007), c. 957-981
Quantum bits with Josephson junctions
G. Wendin and V.S. Shumeiko
Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, Sweden
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).
Ключевые слова: superconductivity, Josephson effect, qubit, quantum electrical circuits.