Topological Quantum Matter

Welcome to Gil Young Cho's group at POSTECH!
(We will move to KAIST from 2024 October)

We are studying condensed matter theory and theory for quantum technologies/computers, focusing on strongly correlated systems and topological phases of matter. We use and combine quantum field theory/conformal field theory, computational approaches like machine learnings, and quantum simulators/computers to study the physics of entanglement-enabled many-body quantum states such as topological insulators/superconductors, 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.


저희 그룹은 응집물질물리학 이론양자기술 이론 연구 그룹으로, 강상관계와 위상물질를 포함한 양자물질 연구를 주로 수행하고 있습니다. 양자장론과 등각장론, 양자정보 이론, 양자컴퓨터/시뮬레이터,수치해석 방법(기계학습 등)과 같은 다양한 방법론을 결합하여, 많은 수의 전자, 큐비트, 보존으로 구성된 다체 양자 역학을 연구하는 그룹입니다. 위상 물질의 대표 격인 위상절연체, 초전도체, 양자 홀 상태, 스핀 액체를 포함하여, 양자 임계점, 비페르미 액체 등의 강상관 물질계를 연구합니다. 이 외에도, 양자 시뮬레이터, 컴퓨터 등에서 구현 가능한 새로운 양자 상태 탐색 연구를 수행하고 있습니다.

저희 그룹에서 발표한 논문 목록에서 어떤 연구들이 수행되고 있는지 확인할 수 있습니다.

News Media Coverage
(언론 소개)

Honors, Awards, Fellowships of Our Group
(그룹 멤버들 장학금, 수상 소식 등)

관정 이종환 장학생 (유민재, 2024) 이공계 대통령 장학생 (이원준, 2024) 우수 논문상 (이원준, 2024)
생애첫 논문상 (서동해, 2024) 삼성휴먼테크 금상 (진세영, 2024)

포스테키안 펠로우쉽 (이찬빈, 2023) 우수발표상 (서동해, 2023) 관정 이종환 장학생 (진세영, 2023)
민병일 고체이론 논문상  (이원준, 2023) 우수 논문상 (이원준, 2023) 차세대 한국과학기술 한림원 (조길영, 2023)

소선나눔기금 장학생 (이원준, 2022) 관정 이종환 장학생 (김선표, 2022) 이달의 과학기술인상 (조길영, 2022)

삼성 휴먼테크 금상 (이원준, 2021) 신진물리학자상 (조길영, 2021) 융합인재펠로우쉽 (서동해, 2021)
포스테키안 펠로우쉽 (이원준, 2021) 관정 이종환 장학생 (홍문주, 2021) 생애 첫 논문상 (이원준, 2021)
우수 논문상 (이종준, 2021) 민병일 고체이론 논문상 (이종준, 2021) 우수 논문상 (이원준, 2021)
민병일 고체이론 논문상 (이원준, 2021) 우수 발표상 (이종준, 2021)

관정 이종환 장학생 (이원준, 2020) 설립 이사장상 (이원준, 2020) 포스코 청암 펠로우쉽 (이종준, 2020)
생애 첫 논문상 (이종준, 2020) 소선 나눔 기금 장학생 (이종준, 2020) 우수 강의상 (조길영, 2020) 
 

News at Cho's group 

1) Wonjun Lee's paper is now published in Physical Review X, congratulations!
2) Wonjun's paper is now published in Nature, congratulations!
3) Dr. Sangjin Lee's paper is now published in Nature Communications, congratulations!
4) Seyoung Jin has received Samsung HumanTech Gold Prize in Basic Science, congratulations!
5) GYC's paper is now accepted to Sci-Post, congratulations!
6) Donghae Seo has received "생애 첫 논문상" for his recent publication in PRB, congratulations!
7) Wonjun Lee has received "우수 논문상" for his recent publication in PRX, congratulations!
8) Cheong-Eung and Wonjun's paper has been uploaded to Arxiv, congratulations!
9) Donghae's paper is now published in Physical Review B, congratulations!
10) Wonjun's paper is accepted to Physical Review Letters, congratulations!
11) Wonjun has received the presidential fellowship ("대통령 장학금") for his PhD studies, congratulations!
      (Wonjun is selected through the 25:1 competition !)
12) GYC's paper is now posted on arxiv, congratulations !
13) Cheong-Eung's paper is now accepted to Physical Review Letters, congratulations !
14) Seyoung's paper is now submitted to the peer-review journal, congratulations !
15) Minjae Yu is selected as a recepient of "관정 이종환 장학금" for his graduate studies, congratulations !
16) Minjae Yu has passed his Master's thesis defence, congratulations !
17) Cheong-Eung has passed his PhD thesis proposal and became PhD candidate, congratulations !   

 

1) GYC's paper is now accepted to Physical Review B!
2) Sangjin's paper is now published to Physical Review B, congratulations !
3) Wonjun Lee is on leave to MIT for 6 months as a visiting student, have a safe travel! 
4) Dr. Sangjin Lee is moving to KIST for his next career, congratulations !
5) Wonjun Lee has received "우수 논문상" for his contribution to the recent Nature paper. Congratulations!
    It's his 2nd time to receive the award. Keep up with good works !  
6) Wonjun Lee has received "민병일 고체이론 논문상" for his contribution to the recent Nature paper. Congratulations!  
    It's his 2nd time to receive the award. Keep up with good works !
7) GYC's paper is now accepted to Advanced Materials !
8) Seyoung Jin received "관정 이종환 장학금" for her graduate study !  Congratulations !
9) Wonjun Lee's paper is now posted on Arxiv, congratulations!
10) Donghae Seo has received "우수발표상 (best presentation award)" from KPS, congratulations! 
11) Donghae Seo's first paper is published in Phys. Rev. B! Congratulations!
12) Cheong-Eung Ahn's new paper is now posted on Arxiv, congratulations!
13) Wonjun Lee's paper is now accepted to Nature, congratulations!
14) Wonjun Lee's paper is now accepted to Phys. Rev. X, congratulations!
15) Chanbeen Lee has received "POSTECHIAN Fellowship", congratulations!
16) Dr. Sangjin Lee's paper is accepted to Nature Communications, congratulations!
17) Donghae Seo's paper is now poted on Arxiv, congratulations!
18) Wonjun Lee's paper is now posted on Arxiv, congratulations!
19) Donghae Seo has passed his proposal for his PhD, congratulations!
20) GYC is elected as an Young member of Korean Academy of Science and Technology (Y-KAST)!
        조선비즈, 한국경제, 연합뉴스동아사이언스, 경북일보, 경북매일 등 


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 :)   


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)


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!