Quantum phase estimation algorithm in presence of static imperfections

I. GARCÍA-MATA; D.L. SHEPELYANSKY

EUROPEAN PHYSICAL JOURNAL D

Año: 2008 vol. 47 p. 151 - 156

1434-6060

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).