Figure 7From: Anomalous diffraction of matter waves with minimal quantum metasurfacesTrajectories of various designs (with \(a=2.5\text{ nm}\), Fig. 3(a), support maximal anomalous reflection) response on the plane of Snell’s (horizontal) and first anomalous (vertical) diffraction as the duty cycle \(a/b\) perturbs by \(\pm 10\%\) around the optimal value. (a) Loci on \((\rho _{0}, \rho _{-1})\) plane and (b) Loci on \((\tau _{0}, \tau _{-1})\) plane. Markers denote the optimal operation point and dashed lines indicate the maximum quantity, equaling to oneBack to article page