Fault-tolerant quantum computation versus Gaussian noise
Hui Khoon Ng, John P. Preskill · Physical Review A · 2009
We study the robustness of a fault-tolerant quantum computer subject to Gaussian non-Markovian quantum noise, and we show that scalable quantum computation is possible if the noise power spectrum satisfies an appropriate ``threshold condition.'' Our condition is less sensitive to very-high-frequency noise than previously derived threshold conditions for non-Markovian noise.