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arXiv · 0705.4017

Quantum pathology of static internal imperfections in flawed quantum computers

Murat Cetinbas·Joshua Wilkie
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Abstract

Even in the absence of external influences the operability of a quantum computer (QC) is not guaranteed because of the effects of residual one- and two-body imperfections. Here we investigate how these internal flaws affect the performance of a quantum controlled-NOT (CNOT) gate in an isolated flawed QC. First we find that the performance of the CNOT gate is considerably better when the two-body imperfections are strong. Secondly, we find that the largest source of error is due to a coherent shift rather than decoherence or dissipation. Our results suggest that the problem of internal imperfections should be given much more attention in designing scalable QC architectures.

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Murat Cetinbas, Joshua Wilkie. 2007-05-28. Quantum pathology of static internal imperfections in flawed quantum computers. https://doi.org/10.1016/j.physleta.2007.05.074

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