DGIST Demonstrates Structural Control of Polaritons for Quantum Device Applications
Mohamed Abdel-Kareem2025-04-10T10:35:26-07:00Researchers at the Daegu Gyeongbuk Institute of Science and Technology (DGIST) have experimentally demonstrated control over polariton Rabi oscillations through ferroelectricity induced by crystallographic phase transitions in a perovskite semiconductor (MAPbBr₃). The work, published in Advanced Science, shows that quantum particle states can be modified without external fields, offering a new method for controlling quantum information carriers using intrinsic material properties. The team constructed a microcavity incorporating the perovskite material and showed that phase transition–driven changes in crystal structure led to up to 20% modulation in Rabi oscillation frequency and up to 44% variation in oscillator strength. These effects were attributed [...]