Structured light are fields which are spatially shaped in its properties such as its amplitude, phase, or polarization. This spatial variation enables light to carry interesting features including orbital angular momentum, complex energy flow structures, singularity configurations, and more. We will discuss how these features make structured light a cutting-edge tool in various areas, ranging from singular and quantum optics to nanophotonics. Exploring its capabilities, we will present the customization of light down to the nanoscale and its application for advanced imaging of nanoemitters as well as quantum cryptography.
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