MIT physicists created a long-lasting magnetic state in a material, using only light. The results provide a new way to control and switch antiferromagnetic materials, which are of interest for their potential to advance information processing and memory chip technology., Scientists from the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) and MIT have achieved a groundbreaking feat — creating a stable, long-lasting magnetic state in an antiferromagnetic material using only light., Researchers have developed a new type of memory cell that can both store information and do high-speed, high-efficiency calculations. The memory cell enables users to run high-speed, Designed to flexibly route and split light on a chip, synthetic magnetic fields in silicon photonic crystals demonstrate high-speed data transmission, opening new possibilities for optical communicati, A Light Comb However, in this work, Marandi and his colleagues have engineered their OPO at the nanoscale on a chip to generate what is known as a frequency comb, a spectrum of evenly spaced laser-like light across a wide range of frequencies with very little input energy., .