In the past 20 years, impressive progress has been made both experimentally and
theoretically in superconducting quantum circuits, which provide a platform for manipulating …

Compared with conventional optical elements, 2D photonic metasurfaces, consisting of
arrays of antennas with subwavelength thickness (the 'meta-atoms'), enable the …

Metasurfaces, with extremely exotic capabilities to manipulate electromagnetic (EM) waves,
have derived a plethora of advanced metadevices with intriguing functionalities …

Resonant metasurfaces are an attractive platform for enhancing the nonlinear optical
processes, such as second harmonic generation (SHG), since they can generate large local …

Optical non-linear phenomena are typically observed in natural materials interacting with
light at high intensities, and they benefit a diverse range of applications from communication …

We review the basic physics and applications of a special class of planar metamaterials,
often called metasurfaces, which are composed of optically thin and densely packed planar …

Frequency conversion processes, such as second-and third-harmonic generation, are
commonly realized in nonlinear optics, offering opportunities for applications in photonics …

This paper is a critical review of metasurfaces, which are planar metamaterials.
Metamaterials offer bespoke electromagnetic applications and novel properties which are …

Metasurfaces, as the ultrathin version of metamaterials, have caught growing attention due
to their superior capability in controlling the phase, amplitude and polarization states of light …

The study of light at the nanoscale has become a vibrant field of research, as researchers
now master the flow of light at length scales far below the optical wavelength, largely …