Structured light refers to the arbitrarily tailoring of optical fields in all their degrees of freedom
(DoFs), from spatial to temporal. Although orbital angular momentum (OAM) is perhaps the …

Two processes of photon-pair creation can be arranged such that the paths of the emitted
photons are identical. The path information is thereby not erased but rather never born in the …

Graphs have provided an expressive mathematical tool to model quantum-mechanical
devices and systems. In particular, it has been recently discovered that graph theory can be …

Entanglement is a quintessential quantum mechanical phenomenon with no classical
equivalent. First discussed by Einstein, Podolsky, and Rosen and formally introduced by …

High-dimensional (HD) entanglement enables an encoding of more bits than in the two-
dimensional case and promises to increase communication capacity over quantum …

We present a tutorial on the phenomenon of induced coherence without induced emission,
and specifically its application to imaging and metrology. It is based on a striking effect …

Artificial intelligence (AI) is a potentially disruptive tool for physics and science in general.
One crucial question is how this technology can contribute at a conceptual level to help …

Photons are the physical system of choice for performing experimental tests of the
foundations of quantum mechanics. Furthermore, photonic quantum technology is a main …

Abstract Information exchange between two distant parties, where information is shared
without physically transporting it, is a crucial resource in future quantum networks. Doing so …

High-dimensional entanglement offers a variety of advantages for both fundamental and
applied applications in quantum information science. A central building block for such …