Solid-state quantum devices use quantum entanglement for various quantum technologies,
such as quantum computation, encryption, communication and sensing. Solid-state …

Quantum state engineering, the cornerstone of quantum photonic technologies, mainly
relies on spontaneous parametric downconversion and four-wave mixing, where one or two …

All-dielectric optical metasurfaces are a workhorse in nano-optics, because of both their
ability to manipulate light in different degrees of freedom and their excellent performance at …

The rapid development of optical metasurfaces, 2D ensembles of engineered
nanostructures, is presently underpinning a steady drive toward the miniaturization of many …

Gallium phosphide (GaP) has been increasingly prioritized, fueled by the enormous
demands in visible light applications such as biomedical and quantum technologies. GaP …

Entangled photon-pair sources are at the core of quantum applications like quantum key
distribution, sensing, and imaging. Operation in space-limited and adverse environments …

Interlayer electronic coupling in two-dimensional materials enables tunable and emergent
properties by stacking engineering. However, it also results in significant evolution of …

We predict theoretically a regime of photon-pair generation driven by the interplay of
multiple bound states in the continuum resonances in nonlinear metasurfaces. This …

Metasurfaces are artificially structured surfaces able to control the properties of light at
subwavelength scales. While, initially, they have been proposed as means to control …

Nonlinear metasurfaces have recently been established as a new platform for generating
photon pairs via spontaneous parametric down-conversion. While for classical harmonic …