arXiv:quant-ph/9604028AbstractReferencesReviewsResources
Stabilisation of Quantum Computations by Symmetrisation
Adriano Barenco, Andre` Berthiaume, David Deutsch, Artur Ekert, Richard Jozsa, Chiara Macchiavello
Published 1996-04-25Version 1
We propose a method for the stabilisation of quantum computations (including quantum state storage). The method is based on the operation of projection into $\cal SYM$, the symmetric subspace of the full state space of $R$ redundant copies of the computer. We describe an efficient algorithm and quantum network effecting $\cal SYM$--projection and discuss the stabilising effect of the proposed method in the context of unitary errors generated by hardware imprecision, and nonunitary errors arising from external environmental interaction. Finally, limitations of the method are discussed.
Comments: 20 pages LaTeX, 2 postscript figures
Categories: quant-ph
Related articles: Most relevant | Search more
Application of Geometric Phase in Quantum Computations
Controlled Stark shifts in Er$^{3+}$-doped crystalline and amorphous waveguides for quantum state storage
Sara R. Hastings-Simon, Matthias U. Staudt, Mikael Afzelius, Pascal Baldi, Didier Jaccard, Wolfgang Tittel, Nicolas Gisin
arXiv:quant-ph/0603192 (Published 2006-03-22)
Investigations of Optical Coherence Properties in an Erbium-doped Silicate Fiber for Quantum State Storage