06 September 2015 2 5K Report

It is common to generate quasi-disorder by a two-color optical lattice where the ratio of the two constituting wavelengths is an irrational number. I was just wondering whether one could also assign quasi-disorder to a two-color optical lattice if this ratio is rational. I mean, it is really not quite possible to obtain an irrational number in real experiments, or am I wrong?

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