Seorhin Choi

I study quantum states in surface-supported lanthanide systems by connecting atomic-scale experiments, spectroscopy, multiplet calculations, and conceptual thinking in quantum physics.

About

I am interested in how quantum states emerge, are measured, and can be modeled in real physical systems. My current work focuses on lanthanide atoms on surfaces, where local symmetry, crystal-field effects, ligand-field contributions, and 4f–5d interactions shape the quantum level structure.

Lanthanide magnetism Multiplet calculations XMCD ESR-STM Quantum materials Quantum foundations

Research

Current Research: Multiplet Calculations and Synchrotron XMCD

Graduate research

My current research investigates the quantum level structure of surface-supported lanthanide atoms. I use multiplet calculations with crystal-field and ligand-field models, constrained by spectroscopic measurements such as XAS, XMCD, and ESR-STM.

A central question in my work is how the 4f electronic structure, local symmetry, and possible 5d contributions determine magnetic anisotropy and spin dynamics in atomic-scale quantum systems.

Internship: Trapped-Ion Quantum Computing

Early research experience

I worked in a trapped-ion quantum computing laboratory, where I gained experience with experimental control systems, including AOM and PID control. This experience shaped my understanding of precision control in quantum platforms.

Internship: Scanning Tunneling Microscopy

Early research experience

I also gained experience in an STM laboratory, assisting with surface preparation and basic STM/STS measurements. This introduced me to atomic-scale surface physics and later motivated my interest in surface-supported spin systems.

Presentations

Korean Physical Society Oral Presentation

Oral presentation

Presented research related to experimental physics and spectroscopy.

ICAE Poster Presentation

Poster presentation

Presented research in an international academic setting.

University Poster Presentation

Poster presentation

Presented research progress within the university research community.

Ideas & Conceptual Work

From States to Paths: Anyons and Quantum Exchange

Philosophy of physics / upcoming presentation

I am developing a philosophy of physics project on whether state-based descriptions are sufficient for analyzing quantum systems, especially in the case of anyonic exchange and braiding.

The project examines how path-dependent topological structures may carry physical significance beyond initial and final quantum states.

Mathematical Formalism for Quantum Mechanics

Physics philosophy study group

I presented on the mathematical formalism of quantum mechanics in a philosophy of physics study group, focusing on how mathematical structures shape the interpretation of quantum theory.

Outreach & Science Communication

Women in Science Panel Moderator

STM 25

Moderated a Women in Science panel discussion, facilitating conversation on research careers, scientific community, and representation in science.

STM Monopoly

Science outreach board game

Developed an educational board game designed to introduce STM concepts and laboratory research culture in an accessible format.

Schrödinger Cat Party

Educational board game / introduced at a science education conference

Developed an educational board game inspired by quantum mechanics. The project was introduced at a science education conference as an example of creative science communication.

Teaching

Independent Academic Mentoring

Private tutoring experience, 7 years

I have taught and mentored more than 40 students over seven years, focusing on concept-based learning in mathematics and physics. My current teaching includes linear algebra using Friedberg's textbook.

General Physics Laboratory Teaching Assistant

Teaching assistant experience

Assisted undergraduate students in experimental physics, including laboratory procedures, data analysis, and scientific reporting.

Linear Algebra Study Group

Planned academic study group

I am organizing a study group focused on linear algebra and its applications to physics.

Leadership & Teamwork

Film Direction with an International Team

Creative leadership

Directed a film project with a multinational team, coordinating diverse perspectives and shaping them into a coherent narrative.

Quantum Art Project

Interdisciplinary collaboration

I am preparing a quantum-art competition project that connects quantum concepts with artistic expression.

Fencing Club

Team activity

Served as a fencing club officer and received a team medal in fencing.

CV

A full CV will be available here.

Download CV

Contact

Email: choi.seorhin@qns.science