Reminder Light-driven computing just reached 10,000 GHz, over 100× faster than today’s processors. In a new study, scientists demonstrated a new type of computing using ultrafast laser pulses instead of electricity. They used a 2D semiconductor called tungsten disulfide, where light controls electron “valley states” a method known as valleytronics. By manipulating these states with femtosecond laser pulses (10⁻¹⁵ seconds), the system achieved switching speeds above 10 terahertz. For comparison, today’s processors operate at only 3–5 GHz 👀! This is still a laboratory experiment, but it shows that combining photonics with quantum materials could enable computers to run hundreds to thousands of times faster than current silicon based technology.