A pair of photons enters an optical maze, and sometimes they leave as something new. Not new in the everyday sense, since ...

Optical vortex plays an important role in a variety of fields, such as particle tweezing, quantum communication, astrophysics, and microscopy. Especially, the application of optical vortex has been ...

Physicists have long relied on elegant theorems to connect the abstract math of quantum theory with the tangible behavior of particles, yet some of those theorems have rested on assumptions that never ...