Chanwoo Kim gave a presentation on photonic quantum computing at the QISCA Journal Club on July 28. While research on superconductors and trapped ion quantum computers is actively underway, interest in photonic quantum computers is also increasing. First of all, it is very attractive that Photonic QC can be implemented not only at room temperature but also at a very long coherence time, but it is difficult to decisively implement multi-qubits. So, in this seminar, we discussed how to encode qubits and implement gates in various ways. And we had time to find out why it is difficult to implement two-qubit gates and the currently researched probabilistically implemented gates.

We participated in 2025 QISCA Summer Conference at Yonsei University, where we listened to various speakers and shared knowledge. It was also a valuable opportunity to interact with QISCA members.

We participated in the 2025 Quantum Infomation Competition. The Quantum Information Research Support Center hosted tis competition. It took place over three days from June 29 to July 1, 2025. The team CHSH25(Chanwoo kim, Eunji park, Haeju jung, Hyeonju song, Sumin moon) participated in the challenge on the topic of Sample-based Quantum Algorithms. They researched way to improve the performance of the HHL algorithm through configuration recovery and received Excellence Award.

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We hosted a networking conference with D-orbital on August 27, 2025. The conference served as an opportunity to introduce DGIST undergraduates to the fields of quantum information and physics, as well as to ongoing research. At DQQQ, Chanwoo Kim, Eunji Park, and Haejoo Jung participated as speaker. Topics are 'Pratical Challenges in QKD and Their Solution, MDI-QKD', 'Error mitigation in QPE', and 'Toward Three-dimensional Surface Codes in Hyperbolic Space'. Through this conference, our goal was to raise awareness of quantum information and physics among undergraduates and to provide a first step for studying quantum information.

In 2025-2, DQQQ participated as mentors in the BQIT(Basic Quantum Information Theory) study and Paper Study organized by QISCA. The mentor of BQIT study is Haejoo Jung, and the mentor of paper study is Chanwoo Kim.

 The BQIT study is designed to learn the fundamental theories of quantum information, covering a wide range of topics from basic alogorithms to mor advanced content.

 The Paper study focuses on reading and discussign research paper on Quantum Communication and Quantum Key DIstribution(QKD). The goal is gaining deep knowledge of the topic and keeping up with the latest research trends.