Flux-based superconducting qubits for quantum computation

Superconducting quantum circuits have been proposed as qubits for developing quantum computation. The goal is to use superconducting quantum circuits to model the measurement process, understand the sources of decoherence, and to develop scalable algorithms. A particularly promising feature of using superconducting technology is the potential of developing high-speed, on-chip control circuitry with single-flux quantum (SFQ) electronics. The picosecond time scales of SFQ electronics means that the superconducting qubits can be controlled rapidly on the time scale that the qubits remain phase-coherent. Recent progress and the major challenges are presented. 2002 Elsevier Science B.V. All rights reserved. PACS: 03.67.Lx; 74.90.þn; 85.25.Dq; 85.25.Cp J