Atoms in silicon dioxide are hit by the yellow light wave (from the left) causing the electrons around each atom to oscillate. This displacement absorbs energy from the light wave. At the end of the cycles the absorbed energy is returned to the light wave. Recording of the temporal evolution of the light field after passage through the sample allows the first real-time observation of the attosecond-speed electron motion inside solids. Credit: Image courtesy of Max Planck Institute of Quantum Optics
Light waves might be able to drive future transistors. The electromagnetic waves of light oscillate approximately 1M times in a billionth of a second, hence with petahertz frequencies. In principle also future electronics could reach this speed and become 100...
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