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• W2046556841 abstract "Dynamical decoupling (DD) is an efficient tool for preserving quantum coherence in solid-state spin systems. However, the imperfections of real pulses can ruin the performance of long DD sequences. We investigate the accumulation and compensation of different pulse errors in DD using the electron spins of phosphorus donors in silicon as a test system. We study periodic DD sequences based on spin rotations about two perpendicular axes, and their concatenated and symmetrized versions. We show that pulse errors may quickly destroy some spin states, but maintain other states with high fidelity over long times. Pulse sequences based on spin rotations about $x$ and $y$ axes outperform those based on $x$ and $z$ axes due to the accumulation of pulse errors. Concatenation provides an efficient way to suppress the impact of pulse errors, and can maintain high fidelity for all spin components: pulse errors do not accumulate (to first order) as the concatenation level increases, despite the exponential increase in the number of pulses. A symmetrized DD sequence cancels the first-order pulse errors. Our theoretical model gives a clear qualitative picture of the error accumulation and produces results in quantitative agreement with the experiments." @default.
• W2046556841 created "2016-06-24" @default.
• W2046556841 creator A5010382232 @default.
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• W2046556841 date "2012-02-14" @default.
• W2046556841 modified "2023-10-16" @default.
• W2046556841 title "Effect of pulse error accumulation on dynamical decoupling of the electron spins of phosphorus donors in silicon" @default.
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• W2046556841 doi "https://doi.org/10.1103/physrevb.85.085206" @default.
• W2046556841 hasPublicationYear "2012" @default.
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