Junseo Lee

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Hello! I’m Junseo Lee, also known as Harris. Welcome to my website!

I am an incoming PhD student in Quantum Science and Engineering at Harvard University starting in Fall 2026, where I will be part of the dynamic research environment of the Harvard Quantum Initiative.

I received my bachelor’s degree in Electrical and Electronic Engineering from Yonsei University, supported by the Hyundai Motor CMK Scholarship in Intelligent Information Technology. After graduation, I completed my mandatory military service in South Korea as a Technical Research Personnel, where I conducted research in theoretical quantum computing for three years. Since my undergraduate years, I have been affiliated with the Quantum Information Theory Group at the Research Institute of Mathematics, Seoul National University.

For more details, please see my Curriculum Vitae (CV). You can also find me on LinkedIn, Google Scholar, and on X (formerly Twitter).

I also maintain the Quantum Learning Theory Zoo, a curated reference page collecting key works in quantum learning theory. If you’re interested in this rapidly growing field, feel free to explore and share it!

Email: harris (dot) junseo (at) gmail (dot) com

Research Interests

Recently, my primary research focuses on the following topics:

  • Quantum tomography, learning, and many-body theory
  • Quantum complexity theory
  • Quantum algorithms
  • Continuous-variable quantum information

I am also broadly interested in theoretical computer science, mathematical physics, and computational topology. For a detailed overview of my research directions, please refer to my publications.

Recent Papers

  • Optimal certification of constant-local Hamiltonians
     Junseo Lee†, Myeongjin Shin
    arXiv:2512.09778 (2025).

  • Efficient learning of bosonic Gaussian unitaries
     Marco Fanizza, Vishnu Iyer, Junseo Lee†, Antonio Anna Mele, Francesco Anna Mele
    Accepted as a contributed talk at QIP 2026. arXiv:2510.05531 (2025).

  • Resource-efficient algorithm for estimating the trace of quantum state powers
     Myeongjin Shin✻, Junseo Lee✻, Seungwoo Lee, Kabgyun Jeong
    Quantum 9, 1832 (2025).

Recent Teaching