A POSTECH research team led by Professor Gil-Ho Lee and Gil Young Cho (Department of Physics) has developed a platform that can control the properties of solid materials with light and measure them.
Recognized for developing a platform to control and measure the properties of materials in various ways with light, the findings from the study were published in the journal Nature on March 15, 2022.
The electrical properties of a material are determined by the movement of electrons in the material. For example, a material is defined as a metal if electrons can move freely; otherwise, it is an insulator. In order to change the electrical properties of these solids, applying heat or pressure or adding impurities have been generally used. This is because the change in the position of the atoms in the solid changes the movement of electrons accordingly.
In contrast, the Floquet state, in which the original quantum state is replicated when light is irradiated on matter, has been proposed. By adopting such a concept, quantum states of matter can be easily manipulated with light, which can be effectively used in quantum systems.
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