Applied Physics B

, Volume 77, Issue 8, pp 789–796

How to realize a universal quantum gate with trapped ions

  • F. Schmidt-Kaler
  • H. Häffner
  • S. Gulde
  • M. Riebe
  • G.P.T. Lancaster
  • T. Deuschle
  • C. Becher
  • W. Hänsel
  • J. Eschner
  • C.F. Roos
  • R. Blatt
Article

DOI: 10.1007/s00340-003-1346-9

Cite this article as:
Schmidt-Kaler, F., Häffner, H., Gulde, S. et al. Appl. Phys. B (2003) 77: 789. doi:10.1007/s00340-003-1346-9

Abstract

We report the realization of an elementary quantum processor based on a linear crystal of trapped ions. Each ion serves as a quantum bit (qubit) to store the quantum information in long lived electronic states. We present the realization of single-qubit and of universal two-qubit logic gates. The two-qubit operation relies on the coupling of the ions through their collective quantized motion. A detailed description of the setup and the methods is included.

Copyright information

© Springer-Verlag 2003

Authors and Affiliations

  • F. Schmidt-Kaler
    • 1
  • H. Häffner
    • 1
  • S. Gulde
    • 1
  • M. Riebe
    • 1
  • G.P.T. Lancaster
    • 1
  • T. Deuschle
    • 1
  • C. Becher
    • 1
  • W. Hänsel
    • 1
  • J. Eschner
    • 1
  • C.F. Roos
    • 1
  • R. Blatt
    • 1
  1. 1.Institut für ExperimentalphysikUniversität InnsbruckInnsbruckAustria