Fig. 1. (a) The designed meta-atom, which is composed of two sets of rod pairs oriented along 0 and π/4, respectively. (b) Database of the phase and amplitude for the single rod. (c) The error of 100 random Jones matrix constructions.

Fig. 2. (a) Schematic of the polarization multiplexed metalens. (b)–(d) The simulated field distributions in three polarization channels encoded by three Jones parameters. (b) x–x channel determined by the profile of J_xx; (c) x–y/y–x channel determined by the profile of J_xy/J_yx; (d) y–y channel determined by the profile of J_yy; (e) the simulated field distribution with right-handed circularly polarized excitation.

Fig. 3. The intensity along the optical axis in each channel and circularly polarized excitation. (a) Jones parameters with unity amplitude in all three channels. (b) Tuning the amplitude factor of each channel with weight factors. (c) Simultaneously tuning amplitude and phase factors in the Jones parameters.

Fig. 4. The distribution of the Jones parameters in order to get uniform and long focus in circularly polarized excitation.

Fig. 5. The simulation field intensity distributions in the x–z plane for the (a) x–x channel, (b) x–y (y–x) channel, (c) y–y channel, and (d) RCP channel. The measured field intensity distributions in the x–z plane for the (e) x–x channel, (f) x–y (y–x) channel, (g) y–y channel, and (h) RCP channel.

Fig. 6. (a) The photograph of the fabricated metalens. (b) Zoomed-in view of details. The dashed square indicates a meta-molecule.