KT Expands Next-Generation Security Quantum Cryptography Demonstration Network Nationwide
IT DAILY ·
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KT will participate in the quantum testbed expansion project promoted by the Ministry of Science and ICT and the National Information Society Agency, and will move into full-scale deployment after the kickoff briefing. The project aims to expand the existing quantum cryptography communication testbed centered on Seoul, Pangyo and Daejeon into a nationwide network by 2028. KT will establish routes from Daejeon to Daegu, Gwangju, Busan and Chuncheon, and will also push ahead with wireless and satellite QKD and verification of quantum entanglement distribution technology.
KT will participate in the quantum testbed expansion project promoted by the Ministry of Science and ICT and the National Information Society Agency (NIA), and will move into full-scale deployment after the kickoff briefing.
On the 22nd, KT said it had completed the kickoff briefing for the "2026 Open Quantum Testbed Advancement and Expansion Project" and announced that the project is now in full swing.
The project aims to advance and expand the open quantum testbed, a demonstration infrastructure for the commercialization and industrial spread of quantum cryptography communication technology.
The core of the project is to expand the existing quantum cryptography communication testbed centered on Seoul, Pangyo and Daejeon into a nationwide network by 2028. KT is pushing ahead with the nationwide expansion of a quantum cryptography communication demonstration network centered on the greater Seoul area and Daejeon, and will handle the build and operation of the commercial base, the "Section A," and the future base, the "Section C."
The main base of the "Section A" project assigned to KT is the existing Daejeon base. The new routes to be established under "Section A" are Daejeon-Daegu, Daejeon-Gwangju, Daegu-Busan and Seoul-Chuncheon.
The "Section C" task includes expanding optical-fiber-based wired QKD into the wireless and satellite domains and verifying quantum entanglement distribution technology. Wireless and satellite QKD can be applied to sections where building an optical-fiber wired network is difficult, and it is a means of expanding the scope of quantum cryptography communication between satellites and the ground.
KT plans to expand the demonstration distance for wireless QKD from about 4.8 km to about 15 km, while applying equipment modularization and adaptive optics technology for atmospheric turbulence. Through this, it aims to secure core foundational technologies that can be expanded to satellites in the future.
KT also plans to push ahead with verifying quantum entanglement distribution technology among multiple nodes. Quantum entanglement is a phenomenon in which the measurement results of two separated particles are closely linked, and entanglement distribution means sharing an entangled state between distant points. This is intended to lay the groundwork for realizing long-distance quantum networks.
For this project, KT plans to use domestically produced quantum cryptography communication equipment and technologies, and on that basis build an environment in which different communication networks and devices can interoperate. It then plans to pursue demonstrations in actual service environments targeting a range of sectors, including finance and healthcare.
Source: IT DAILY · Seong Won-young
Original: https://www.itdaily.kr/news/articleView.html?idxno=242387
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Source: IT DAILY
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