Sookmyung Women's University announced on July 26, 2025, that the research team led by Professor Oh Jiseop from the Department of Advanced Materials Physics has, for the first time, identified the principle of controlling the phenomenon of 'quantum entanglement' necessary for the realization of quantum computers.
At the Korea Institute of Standards and Science booth at 'Quantum Korea 2025' held at aT Center in Seocho-gu, Seoul, a visitor is looking at a model of a quantum computer. Photo by Yonhap News
Quantum entanglement is a phenomenon in which two physically separated substances interact as if they are connected, and this can be used to develop key materials for implementing quantum bits.
The research team analyzed the interactions of atoms in a kagome lattice structure, which consists of triangles and hexagons, and discovered that when materials exhibiting various quantum phases such as superconductivity and magnetism are combined with a band structure in a quantum-mechanical ordered state, a quantum entanglement phase emerges.
This research was conducted jointly with the University of California, Berkeley, Rice University, SLAC National Accelerator Laboratory in the United States, and the Weizmann Institute of Science in Israel. The paper was published online in the international journal Science Advances on July 2, 2025.
Professor Oh stated, "It is significant that we were able to separate the interactions between quantum mechanical degrees of freedom," and added, "This achievement will be utilized in next-generation quantum technologies."
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