The spatial structure of single photon, the smallest elementary particle of light, and any other form of electromagnetic radiation, has been rendered with the help of holograms.
This is a great step further in understanding and develop free-space quantum communication that will allow Tb/s data rates and quantum computers that will be so powerful compared to today's computers that they'll probably undermine the security surrounding most cryptocurrencies using Proof-of-Work systems.
The team of Polish physicists at the University of Warsaw: Radosław Chrapkiewicz, Michał Jachura, Konrad Banaszek & Wojciech Wasilewski, were able to create an hologram of a single photon by firing two light beams at a beamsplitter. The resulting image looks a like a cross, just like the wave function predicted from Schrödinger’s equation.
Quantum interference of two spatially structured photons, schematic experimental setup:
Source: http://www.nature.com/nphoton/journal/v10/n9/full/nphoton.2016.129.html