Jun. 3, 2021 , 12:43 PM
A beam of ethereal blue laser light enters a specialized crystal. There it turns red, a sign that each photon has split into a pair with lower energies and a mysterious connection. The particles are now quantum mechanically “entangled,” linked like identical twins who know each other’s thoughts despite living in distant cities. The photons zip through a tangle of fibers, then ever so gently deposit the information they encode into waiting clouds of atoms.
The transmogrifications are “a little bit like magic,” exults Eden Figueroa, a physicist at Stony Brook University. He and colleagues have concocted the setup on a few laboratory benches cluttered with lenses and mirrors. But they have a much bigger canvas in mind.
A two-time best vegetable farmer and a lead farmer for 2019 and 2020, Mr Benjamin Afrane, has appealed to the government under its "halt galamsey" operation to divert all seized water pumps and excavators to farmers to assist in irrigation.
Atomically thin van der Waals magnets are seen as the ultimately compact media for future magnetic data storage and fast data processing. Controlling the magnetic state of these materials, however, is difficult. But now, an international team of researchers led by Delft University of Technology (TU Delft) has managed to use light in order to change the anisotropy of a van der Waals antiferromagnet, paving the way to new, extremely efficient means of data storage.