Progress Article abstract

Nature Physics , 19 - 26 (2009)
Published online: 2 January 2009 | doi:10.1038/nphys1157

Measurement-based quantum computation

H. J. Briegel1,2, D. E. Browne3, W. Dür1,2, R. Raussendorf4 & M. Van den Nest2,5

Quantum computation offers a promising new kind of information processing, where the non-classical features of quantum mechanics are harnessed and exploited. A number of models of quantum computation exist. These models have been shown to be formally equivalent, but their underlying elementary concepts and the requirements for their practical realization can differ significantly. A particularly exciting paradigm is that of measurement-based quantum computation, where the processing of quantum information takes place by rounds of simple measurements on qubits prepared in a highly entangled state. We review recent developments in measurement-based quantum computation with a view to both fundamental and practical issues, in particular the power of quantum computation, the protection against noise (fault tolerance) and steps towards experimental realization. Finally, we highlight a number of connections between this field and other branches of physics and mathematics.

  1. Institute for Theoretical Physics, University of Innsbruck, Technikerstras zlige 25, A-6020 Innsbruck, Austria
  2. Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, Technikerstras zlige 21a, A-6020 Innsbruck, Austria
  3. Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK
  4. University of British Columbia, Department of Physics and Astronomy, 6224 Agricultural Road, Vancouver, British Columbia V6T 1Z1, Canada
  5. Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Str. 1, D-85748 Garching, Germany

Correspondence to: H. J. Briegel1,2 e-mail:


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