[1] [1] P. Genevet, N. Yu, F. Aieta, J. Lin, M. Kats, R. Blanchard, M. Scully, Z. Gaburro, and F. Capasso, “Ultra-thin plasmonic optical vortex plate based on phase discontinuities,” Appl. Phys. Lett. 100, 013101 (2012).

[2] [2] S. Sun, Q. He, S. Xiao, Q. Xu, X. Li, and L. Zhou, “Gradient-index meta-surfaces as a bridge linking propagating waves and surface waves,” Nat. Mater. 11, 426–431 (2012).

[3] [3] R. Z. Li, Z. Y. Guo, W. Wang, J. R. Zhang, A. J. Zhang, J. L. Liu, S. L. Qu, and J. Gao, “Ultra-thin circular polarization analyzer based on the metal rectangular split-ring resonators,” Opt. Express 22, 27968–27975 (2014).

[4] [4] X. Ni, A. V. Kildishev, and V. M. Shalaev, “Metasurface holograms for visible light,” Nat. Commun. 4, 2807 (2013).

[5] [5] Z. Li, L. Huang, K. Lu, Y. Sun, and L. Min, “Continuous metasurface for high-performance anomalous reflection,” Appl. Phys. Express 7, 112001 (2014).

[6] [6] L. Zhang, J. Hao, M. Qiu, S. Zouhdi, J. K. W. Yang, and C. W. Qiu, “Anomalous behavior of nearly-entire visible band manipulated with degenerated image dipole array,” Nanoscale 6, 12303– 12309 (2014).

[7] [7] W. Wang, Z. Y. Guo, R. Z. Li, J. R. Zhang, Y. Liu, X. Wang, and S. L. Qu, “Ultra-thin, planar, broadband, dual-polarity plasmonic metalens,” Photon. Res. 3, 68–71 (2015).

[8] [8] D. Hu, X. Wang, S. Feng, J. Ye, W. Sun, Q. Kan, J. K. Peter, and Y. Zhang, “Ultrathin terahertz planar elements,” Adv. Opt. Mater. 1, 186–191 (2013).

[9] [9] A. Pors, M. G. Nielsen, R. L. Eriksen, and S. I. Bozhevolnyi, “Broadband focusing flat mirrors based on plasmonic gradient metasurfaces,” Nano Lett. 13, 829–834 (2013).

[10] [10] F. Aieta, P. Genevet, M. A. Kats, N. Yu, R. Blanchard, Z. Gaburro, and F. Capasso, “Aberration-free ultrathin flat lenses and axicons at telecom wavelengths based on plasmonic metasurfaces,” Nano Lett. 12, 4932–4936 (2012).

[11] [11] X. Ni, S. Ishii, A. V. Kildishev, and V. M. Shalaev, “Ultra-thin, planar, Babinet-inverted plasmonic metalenses,” Light Sci. Appl. 2, e72 (2013).

[12] [12] X. Li, S. Xiao, B. Cai, Q. He, T. J. Cui, and L. Zhou, “Flat metasurfaces to focus electromagnetic waves in reflection geometry,” Opt. Lett. 37, 4940–4942 (2012).

[13] [13] D. Lin, P. Fan, E. Hasman, and M. L. Brongersma, “Dielectric gradient metasurface optical elements,” Science 345, 298–302 (2014).

[14] [14] X. Chen, L. Huang, H. Mühlenbernd, G. Li, B. Bai, Q. Tan, F. Guo, W. Cheng, Z. Thomas, and S. Zhang, “Reversible threedimensional focusing of visible light with ultrathin plasmonic flat lens,” Adv. Opt. Mater. 1, 517–521 (2013).

[15] [15] S. A. Kuznetsov, M. A. Astafev, M. Beruete, and M. Navarro-Cía, “Planar holographic metasurfaces for terahertz focusing,” Sci. Rep. 5, 7738 (2015).

[16] [16] E. Hasman, V. Kleiner, G. Biener, and A. Niv, “Polarization dependent focusing lens by use of quantized Pancharatnam- Berry phase diffractive optics,” Appl. Phys. Lett. 82, 328–330 (2003).

[17] [17] R. Z. Li, Z. Y. Guo, W. Wang, J. R. Zhang, A. J. Zhang, J. L. Liu, S. L. Qu, and J. Gao, “High-efficiency cross polarization converters by plasmonic metasurface,” Plasmonics, Doi: 10.1007/ s11468-015-9916-3 (in press).

[18] [18] G. Zheng, H. Mühlenbernd, M. Kenney, G. Li, T. Zentgraf, and S. Zhang, “Metasurface holograms reaching 80% efficiency,” Nat. Nanotechnol. 10, 308–312 (2015).

[19] [19] H. Zhang, Q. Tan, and G. Jin, “Holographic display system of a three-dimensional image with distortion-free magnification and zero-order elimination,” Opt. Eng. 51, 075801 (2012).

[20] [20] M. D. Huntington, L. J. Lauhon, and T. W. Odom, “Subwavelength lattice optics by evolutionary design,” Nano Lett. 14, 7195–7200 (2014).