Dr. Lee Seung-woo of KIST “Contributes to Advancing the Practical Application of Quantum Computing”,
“(Seoul=Yonhap News) Reporter Lee Joo-young = Domestic researchers have announced research results that elevate the ‘Quantum Error Correction’ technology, a key technology needed for the realization and practical application of quantum computing, to the world’s highest level.”,
‘Quantum error correction fusion-based fault-tolerant fusion-based quantum computing architecture
[Provided by Korea Institute of Science and Technology. Redistribution and DB prohibited]‘,
‘Korea Institute of Science and Technology (KIST) Quantum Technology Research Group led by Dr. Lee Seung-woo independently developed world-class error correction technology through pure domestic research and designed a fault-tolerant quantum computing architecture based on it.’,
‘The research team stated that this technology has surpassed the quantum error correction technology of PsiQuantum, a leading company in the development of universal quantum computing, and the research has developed world-class core technology as a latecomer in quantum computing.’,
‘The information inputted into qubits, the smallest unit of quantum operation, is quickly lost, and errors easily occur, making algorithm execution impossible as errors accumulate with increasing system size and computation scale.’,
‘The method to solve this is quantum error correction, and the performance of universal quantum computers is evaluated by the fault-tolerance threshold. The threshold indicates how well errors in quantum computing can be corrected, and the better the error correction technology and architecture design, the higher the value.’,
‘Graph of fault-tolerant threshold for loss due to optical loss
Comparison of fault-tolerant threshold for loss due to optical loss with PsiQuantum’s FBQC method. The error correction input fusion-based quantum computing (EFBQC) developed by the research team has a maximum threshold of 14%, significantly exceeding PsiQuantum’s maximum threshold of 2.7%, and achieving a significantly higher threshold even when consuming the same amount of resources (photons). [Provided by Korea Institute of Science and Technology. Redistribution and DB prohibited]‘,
‘PsiQuantum has recorded a maximum optical loss threshold of 2.7% through a quantum computing architecture that utilizes photon entanglement resources, fusion techniques, and error correction technology.’,
‘However, the new error correction technique and quantum computing architecture developed by the research team showed a maximum optical loss threshold of 14%, significantly exceeding the performance of PsiQuantum’s method.’,
‘The research team stated that this error correction technique achieved significantly superior resource efficiency compared to PsiQuantum’s technology with the same photon consumption and demonstrated the potential to catch up and even lead quantum technology leaders in countries such as the United States.’,
‘The team has completed patent applications for this technology domestically and internationally, and it is expected to play a crucial role in establishing an independent universal quantum computing system when applied.’,
‘Dr. Lee Seung-woo said, “Just as architecture design is important in semiconductor chip design, it is also crucial in quantum computing. Even with 1,000 qubits, if the structure does not perform error correction, even computing of one unit of logical qubits is difficult” and “The practical application of quantum computing still requires time, but this research will contribute to advancing that time a bit.”‘,
‘This research result was published in the international academic journal Physical Review Letters (Aug 1).’,