All light has structure, but only recently has it been possible to control it in all its degrees of
freedom and dimensions, fuelling fundamental advances and applications alike. Here we …

Since its discovery, quantum entanglement has challenged some of the best established
views of the world: locality and reality. Quantum technologies promise to revolutionize …

Photonic quantum technologies represent a promising platform for several applications,
ranging from long-distance communications to the simulation of complex phenomena …

Twisted photons can be used as alphabets to encode information beyond one bit per single
photon. This ability offers great potential for quantum information tasks, as well as for the …

Structured light refers to the generation and application of custom light fields. As the tools
and technology to create and detect structured light have evolved, steadily the applications …

Twenty-five years ago Allen, Beijersbergen, Spreeuw, and Woerdman published their
seminal paper establishing that light beams with helical phase-fronts carried an orbital …

Quantum key distribution (QKD) promises information-theoretically secure communication
and is already on the verge of commercialization. The next step will be to implement high …

Spatial modes of light can potentially carry a vast amount of information, making them
promising candidates for both classical and quantum communication. However, the …

Noise can be considered the natural enemy of quantum information. An often implied benefit
of high-dimensional entanglement is its increased resilience to noise. However, manifesting …

Photons with a twisted phase front carry a quantized amount of orbital angular momentum
(OAM) and have become important in various fields of optics, such as quantum and classical …