<p>➀ Researchers at European XFEL demonstrated ultrafast control of ferroelectric material polarization using light pulses, decoupling it from lattice distortion for the first time;</p><p>➁ The breakthrough, achieved via high-energy laser and X-ray analysis, enables polarization changes in under a trillionth of a second, driven by photoexcited electrons;</p><p>➂ This paves the way for light-controlled, energy-efficient electronics with applications in data processing, sensing, and next-gen memory technologies.</p>