  All-dielectric nanophotonics has become one of the most active fields of
research in modern optics, largely due to the opportunities offered by the
simultaneous resonant control of electric and magnetic components of light at
the nanoscale. In this rapidly evolving scenario, the possibility to design
artificial Huygens sources by overlapping electric and magnetic resonances has
established a new paradigm in flat optics, bringing devices closer to efficient
wavefront shaping with a direct phase engineering at the level of the
individual meta-atoms. However, their efficiency is fundamentally limited by
the near field coupling between the constituents of the metalattice. In this
work, we challenge this well-conceived notion and propose an alternative
concept to achieve phase control and full transmission in metasurfaces, based
on the unusual properties of the nonradiating sources known as Hybrid Anapoles
(HAs). We analyze theoretically an array of such sources and demonstrate that
HAs are characterized by a negligible coupling with their neighbors. Therefore,
in contrast to Huygens particles, the proposed sources can operate as
individual meta-atoms even in highly compact designs, becoming robust against
strong disorder and preserving its characteristics when deposited on dielectric
substrates. Remarkably, the phase of the transmitted wave can be modulated with
negligible reflection. To illustrate the capabilities of our platform, we also
utilize a disordered HA array to implement a controlled phase modulation to an
ultrafast gaussian pulse. The results of our study represent a departure from
the currently established designs and open an avenue towards the realization of
new devices for flat optics with unprecedented efficiency.
