Thirty years ago, Coullet et al. proposed that a special optical field exists in laser cavities
bearing some analogy with the superfluid vortex. Since then, optical vortices have been …

In recent years, there has been a rising interest in high‐dimensional quantum states and
their impact on quantum communication. Indeed, the availability of an enlarged Hilbert …

Quantum metrology is one of the most promising applications of quantum technologies. The
aim of this research field is the estimation of unknown parameters exploiting quantum …

Integrated photonics is attracting considerable attention and has found many applications in
both classical and quantum optics, fulfilling the requirements for the ever-growing complexity …

Femtosecond laser inscription or writing has been recognized as a powerful technique to
engineer various materials toward a number of applications. By efficient modification of …

Ultrafast laser direct writing (ULDW) is explored as a facile technique to induce
unprecedented physical phenomena and functional structures three dimensionally in glass …

Applications that use the orbital angular momentum (OAM) of light show promise for
increasing the bandwidth of optical communication networks. However, direct photocurrent …

Interest in the multiple facets of optical vortices has flourished in the last three decades. This
review examines the basic research and applications of the interplay between optical …

Since their first introduction in 2006, q-plates have found a constantly increasing number of
uses in diverse contexts, ranging from fundamental research on complex structured light …

Structured light is attracting significant attention for its diverse applications in both classical
and quantum optics. The so-called vector vortex beams display peculiar properties in both …