Professor Yong-Joo Doh's research project is selected by the Ministry of Science and Technology

□ A research project proposed by Professor Yong-Joo Doh of the Department of Physics and Photon Science was selected by the Ministry of Science and Technology and the National Research Foundation.

∘ The selected research projects represent the most creative and challenging tasks for the development of new technologies, and the researchers are provided with significant support. Among the individual research projects implemented by the Korea Research Foundation, the amount of support is the highest.

∘ All of the domestic natural science and engineering fields are eligible. This year only ten projects were selected, but only one task was selected in the field of physics.

□ Professor Yong-Joo Doh's research project is focused on securing source technologies for the implementation of quantum computers by combining superconductors and nano-semiconductors. A quantum computer is a state-of-the-art computer in which information is stored and computed based on the quantum state of a material. The United States, China, and the EU are making strategic investments in this research area. Professor Yong-Joo Doh has proposed the use of a topological insulator as the basic element of a phase quantum computer. Theoretically, a phase insulator forms a maryland fermion state, which is the basic unit of a phase quantum computer when a junction is made with a superconductor.

∘ The previous research results of Professor Yong-joo Doh have been published in the top academic journals such as Science, Nature Communications, Nano Letters, Physical Review Letters, and ACS Nano.

□ Professor Yong-Joo Doh's work, which was selected after 13:1 competition, will start from June of this year and will receive 800 million won every year for 9 years through the National Research Foundation.

1. Superconductivity: The phenomenon that electrical resistance disappears at a low temperature by the principle of quantum physics. Since there is no resistance, there is no power loss. The discovery of the superconducting phenomenon led to the Dutch scientist Cameling Onnes winning the Nobel Prize for Physics in 1913 and John Bardin, Ryan Cooper and John Shippers who awarded the Nobel Prize for physics in 1972 for the theory of superconductivity.

2. Topological insulator: The interior of a material is an insulator with an energy gap similar to a general insulator, but also a new material with electrical conductivity similar to metal along the surface of the material in accordance with topological conditions.

3. Majorana fermion: Majorana fermion is an antimatter particle that is located between matter and antimatter. It is an unusual particle that was predicted 80 years ago by Italian physicist Torre Marayola, but it has not been experimentally confirmed.