Scalable solid-state quantum computation in decoherence-free subspaces with trapped ions

Abstract

We propose a decoherence-free subspaces (DFS) scheme to realize scalable quantum computation with trapped ions. The spin-dependent Coulomb interaction is exploited, and the universal set of unconventional geometric quantum gates is achieved in encoded subspaces that are immune from decoherence by collective dephasing. The scalability of the scheme for the ion array system is demonstrated, either by an adiabatic way of switching on and off the interactions, or by a fast gate scheme with comprehensive DFS encoding and noise decoupling techniques.

4 pages, 1 figure

References in corpus (2)

• Fast and robust two-qubit gates for scalable ion trap quantum computing
• Holonomic quantum computation in decoherence-free subspaces

Cited by in corpus (4)

• Simple unconventional geometric scenario of one-way quantum computation with superconducting qubits inside a cavity
• Physical implementation of topologically decoherence-protected superconducting qubits
• Time-dependent Fröhlich transformation approach for two-atom entanglement generated by successive passage through a cavity
• Quantum computation in decoherence-free subspace with superconducting devices