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The European Physical Journal D

, Volume 47, Issue 1, pp 151–156 | Cite as

Quantum phase estimation algorithm in presence of static imperfections

  • I. García-Mata
  • D. L. Shepelyansky
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Abstract.

We study numerically the effects of static imperfections and residual couplings between qubits for the quantum phase estimation algorithm with two qubits. We show that the success probability of the algorithm is affected significantly more by static imperfections than by random noise errors in quantum gates. An improvement of the algorithm accuracy can be reached by application of the Pauli-random-error-correction method (PAREC).

PACS.

03.67.Lx Quantum computation 85.25.Cp Josephson devices 24.10.Cn Many-body theory 

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Copyright information

© EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Authors and Affiliations

  • I. García-Mata
    • 1
  • D. L. Shepelyansky
    • 1
  1. 1.Laboratoire de Physique Théorique, Université de Toulouse III, CNRSToulouseFrance

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