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Laser Physics

, Volume 16, Issue 8, pp 1264–1267 | Cite as

Absolute robustness of the first principal Fourier state component and noise suppression in Hilbert space

  • Yu. I. Bogdanov
  • S. P. Kulik
Quantum Information and Computation
  • 21 Downloads

Abstract

The effect of the absolute robustness of the first principal Fourier-state component is developed upon rounding off the density matrix elements. A protocol for extracting the pure state using the Fourier transform and auxiliary qubits is proposed.

PACS numbers

03.65.Wj 03.65.Yz 03.67.-a 

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References

  1. 1.
    M. A. Nelsen and I. L. Chuang, Quantum Computation and Quantum Information (Cambridge Univ. Press, Cambridge, 2000).Google Scholar
  2. 2.
    Yu. I. Bogdanov, M. V. Chekhova, S. P. Kulik, et al., Phys. Rev. Lett. 93, 230 503 (2004).Google Scholar
  3. 3.
    Yu. I. Bogdanov, M. V. Chekhova, S. P. Kulik, et al., quant-ph/0411192 (2004).Google Scholar

Copyright information

© MAIK “Nauka/Interperiodica” 2006

Authors and Affiliations

  • Yu. I. Bogdanov
    • 1
  • S. P. Kulik
    • 2
  1. 1.Institute of Physics and TechnologyRussian Academy of SciencesMoscowRussia
  2. 2.Faculty of PhysicsMoscow State UniversityMoscowRussia

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