Topological Quantum Matter

Welcome to Gil Young Cho's group at POSTECH!

We are studying condensed matter theory, focusing on strongly correlated systems and/or topological phases of matter. We use and combine quantum field theory/conformal field theory, computational approaches such as Machine Learning, and quantum simulators/computers to study the physics of entanglement-enabled many-body quantum states such as topological insulators/superconductors, fractional quantum Hall effects, spin liquids, strong correlation-driven ordered phases, and quantum critical states. We are also interested in (irrespective of their relation with condensed matter physics): Quantum Field Theory, Statistical Mechanics, and Quantum Algorithms.

The full publication list as well as selected papers from our group can be found at Publication List, from which you can learn more about specific research topics.



Seminars, Lectures, and Programs at Cho's group

(for the details, please see this page)


  • Incoming Events (not time-ordered)
    - TBA


News at Cho's group

  • Year of 2023

1) GYC's paper is now accepted to Physical Review B!
2) Sangjin's paper is now published to Physical Review B, congratulations !



  • Year of 2022

1) Wonjun's paper is now published at Nature! Congratulations :)
- This work has been featured in a number of (more than 40) news articles:
조선비즈, 한국경제, 세계일보, 문화일보, 한겨레, 서울경제, 헤럴드경제, 머니투데이, 파이낸셜뉴스, 아시아경제, 전자신문, 연합뉴스 and many more

2) Cheung-Eung's paper has been published in JKPS (invited research article)! Congratulations :)

3) Wonjun's paper is published in Physical Review B! Congratulations :)

4) Seonpyo has received "관정 이종환 장학금" for his graduate study! Congratulations :)

5) Minyoung's paper is uploaded to Arxiv today! Congratulations :)

6) GYC has received "this month's Science, Technology and Researcher award" (이달의 과학기술인상) from the ministry of science and ICT, Korea! 서울경제, 동아사이언스, 매일경제, 한겨레, 세계일보, 아시아경제, 전자신문, 이데일리, YTN사이언스, 연합뉴스, 뉴시스, 뉴스1 등.
* Interview is available at
this website.

7) GYC has been promoted to Associate Professor !

8) Wonjun has received the graduate fellowship from "소선 나눔 기금" for his excellence in research. Congratualations!

9) Donghae and Minyoung's paper is uploaded to Arxiv today! Congratulations :)

10) GYC's paper is now accepted to Nano Letters!

11) Wonjun became "PhD candidate" (2022-12-13) ! Congratulations :)


  • Year of 2021

1) Wonjun Lee has published his first paper at Physical Review Letters. Congratulations!

2) Jongjun Lee has received "우수 발표상" at KPS Fall Meeting (2020). Congratulations!

3) Wonjun Lee has received "삼성 휴먼테크 논문 대상" 금상 수상 [공동]. Congratulations!

4) Jongjun Lee has received "우수 논문상" for his contribution to the recent PRL paper. Congratulations!

5) Wonjun Lee has received "우수 논문상" for his contribution to the recent PRL paper. Congratulations!

6) Jongjun Lee has received "민병일 고체 이론 논문 상" for his contribution to the recent PRL paper. Congratulations!

7) Wonjun Lee has received "민병일 고체 이론 논문 상" for his contribution to the recent PRL paper. Congratulations!

8) Wonjun Lee has received "BK First Paper Award". Congratulations!

9) Jongjun Lee's second paper is published at Physical Review Letters. It's his 2nd PRL. Congratulations! (2021/05/08)

10) Moonju Hong has received "관정 이종환 장학금" for his graduate study. Congratulations! (2021/04/27)

11) Wonjun Lee has received "POSTECHIAN Fellowship (포스테키안 펠로우십)". Congratulations! (2021/05/21)

12) Donghae Seo has received "융합 인재 Fellowship". Congratulations! (2021/06/21)

13) GYC has received "신진물리학자 상" from KPS (2021/10/20).

14) Wonjun Lee's paper is accepted to Nano Letters. Congratulations! (2021/12/09)

15) Wonjun Lee's paper is accepted to Nature. Congratulations! (2021/12/16)


  • Year of 2020

1) Jongjun Lee has published his first paper at Physical Review Letters. Congratulations!

2) Wonjun Lee has uploaded his first paper to arxiv. Congratulations!

3) Wonjun Lee has received "관정 이종환 장학금" for his graduate school. Congratulations!

4) GYC has received Best Lecturer Award (우수 강의상).

5) Wonjun Lee has received "설립이사장상" for his GPA achievement of his Bachelor's degree. Congratulations!

(The award is given to the student, who achieved the highest GPA at the commencement.)

6) Jongjun Lee has received POSCO Science Fellowship ("포스코 청암 사이언스 펠로") for his graduate school. Congratulations!

7) Jongjun Lee has received his "First Paper Award" ("생애 첫 논문 상") for his recent publication at Physical Review Letters. Congratulations!

8) Jongjun Lee has uploaded his new paper to arxiv, which will be submitted to Journal, soon. Congratulations!

9) Jongjun Lee has received "소선 나눔 기금" for his excellence in research. Congratulations!