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. 2014 Oct 13;4:6603. doi: 10.1038/srep06603

Figure 2. Numerics comparing the minimum spectral gaps required to reduce the term αX1Y2Z3 to 2-local with an error in the eigenspectrum of at most Inline graphic.

Figure 2

On the left, Inline graphic is fixed at 0.001 and gaps are plotted as a function of α. On the right, α is fixed at 0.1 and gaps are plotted as a function of Inline graphic. Here we compare the bit-flip construction77,78, the Oliveira and Terhal construction79 and an improved variant on Oliveira and Terhal by Cao et al.80.