Gao KuiYi-中国人民大学物理学院

Atomic and Molecular Physics, Quantum Information and Quantum Computing

Gao KuiYiAssociate Professor

Address：Room 711, Technology

E-mail：kgao@ruc.edu.cn

Phone：0086-10-62516297

Fax：0086-10-62517887

Webpage：

Education: September 2010 – July 2014: Doctor of Philosophy, Institute of Physics, Chinese Academy of Sciences
September 2006 – July 2009: Master of Science, Institute of Physics, Chinese Academy of Sciences
September 2002 – June 2006: Bachelor of Engineering, Wuhan University

Work Experience: September 2020 – Present: Associate Professor, Department of Physics, Renmin University of China
September 2014 – June 2020: Postdoctoral Researcher, Universität Bonn, Germany (Supervisor: Prof. Michael Köhl)
September 2009 – July 2010: Engineer, Institute of Physics, Chinese Academy of Sciences

Research Interests

The main research directions focus on experiments with ultracold atoms (quantum gases) and quantum simulations based on cold atoms, specifically including:

Pairing, superfluidity, and non-equilibrium dynamics of strongly interacting ultracold atoms;
New phases of matter in low-dimensional quantum gases, such as Berezinskii–Kosterlitz–Thouless (BKT) superfluidity and quantum droplets;
Novel preparation techniques for Bose-Einstein condensates, deep cooling technologies for ultracold Fermi gases, and new atomic trapping methods;
Manipulation and imaging of ultracold atoms in novel structured optical lattices, and quantum phase transitions therein.

Currently, we are constructing a new-generation ultracold atom experimental platform for ³⁹K–⁶Li containing both bosons and fermions. Using novel experimental techniques such as box potentials and optical lattices, we aim to prepare highly uniform two-dimensional quantum gases. Through time-resolved interaction manipulation and measurement techniques, we will conduct research on the non-equilibrium dynamics of quantum gases.

Scientific Research Programs

National Key Research and Development Program - Project, High-Time-Resolution Control and Dynamic Research of Two-Dimensional Uniform Ultracold Bose Gases, December 2022–November 2027, Principal Investigator
National Natural Science Foundation of China - General Program, Time-Resolved Measurement of Non-Equilibrium Dynamics in Two-Dimensional Uniform Ultracold Fermi Gases, January 2023–December 2026, Principal Investigator
Sino-German Science Center (NSFC) - Exchange Program, Non-Equilibrium Dynamics in Strongly Interacting Fermi Gases, January 2021–December 2023, Participant
Renmin University of China - New Faculty Startup Fund Project, January 2021–December 2023, Principal Investigator

Talent Cultivation

The research team currently has 3 doctoral students and 1 master's student.

We plan to enroll 1-2 students each year for the master-doctor joint program, direct doctoral students, or doctoral students. Students who are proactive and interested in ultracold atomic physics and related experimental technologies (lasers, ultra-high vacuum, electronic technology, etc.) are welcome to join us.

Please contact directly via email: kgao@ruc.edu.cn

Achievements

1.Tongtong Ren, Yirong Wang, Xiaoyu Dai, Xiaoxu Gao, Guangren Sun, Xue Zhao, Kuiyi Gao*, Zhiyue Zheng*, and Wei Zhang, An efficient method to generate near-ideal hollow beams of different shapes for box potential of quantum gases, Rev. Sci. Instrum. 95, 083202(2024)

2. D. Eberz, M. Link, A. Kell, M. Breyer, K. Gao, and M. Köhl*, Detecting the phase transition in a strongly interacting Fermi gas by unsupervised machine learning, Phys. Rev. A 108, 063303(2023)

3. M. Link, K. Gao, A. Kell, M. Breyer, D. Eberz, B. Rauf, and M. Köhl*, Machine Learning the Phase Diagram of a Strongly Interacting Fermi Gas, Phys. Rev. Lett. 130, 203401(2023)

4. Yueran Shi, Yirong Wang, Kuiyi Gao*, and Wei Zhang*, Dimensional crossover of Fermi polaron in quasi-low-dimensional traps, EPL, 142, 25001(2023)

5. Yue-Ran Shi, Jin-Ge Chen, Kui-Yi Gao*, and Wei Zhang*, Non-universal Fermi polaron in quasi two-dimensional quantum gases, Chin. Phys. B, 31, 080305(2022)

6. Andreas Kell, Martin Link, Akos Hoffmann, Moritz Breyer, Michael Köhl* and Kuiyi Gao*, A compact and fast magnetic coil for the manipulation of quantum gases with Feshbach resonances, Rev. Sci. Instrum. 92, 093202(2021)

7. Timothy Harrison, Martin Link, Alexandra Behrle, Kuiyi Gao*, Andreas Kell, Johannes Kombe, Jean-Sébastien Bernier, Corinna Kollath, Michael Köhl, Decay and revival of a transient trapped Fermi condensate, Phys. Rev. Research 3, 023205 (2021)

8. Jin-Ge Chen, Yue-Ran Shi, Ren Zhang, Kui-Yi Gao* and Wei Zhang*, Fulde-Ferrell-Larkin-Ovchinnikov states in equally populated Fermi gases in a two-dimensional moving optical lattice, Chin. Phys. B. 30, 100305(2021)

9. Qiuxin Zhang, Yirong Wang, Chenhao Zhu, Yuxin Wang, Xiang Zhang, Kuiyi Gao*, Wei Zhang*, Precision measurements with cold atoms and trapped ions, Chin. Phys. B. 29, 093203(2020)

10. Alexandra Behrle, Timothy Harrison, Johannes Kombe, Kuiyi Gao*, Martin Link, Jean-Sebastien Bernier, Corinna Kollath and Michael Köhl*, Higgs mode in a strongly interacting fermionic superfluid, Nature Physics, 14,781(2018)

11. Xinyu Luo, Lingna Wu, Jiyao Chen, Qing Guan, Kuiyi Gao, Zhifang Xu, Li You, and Ruquan Wang*, Tunable atomic spin-orbit coupling synthesized with a modulating gradient magnetic field, Scientific Reports 6, 18983 (2016)

12. Gao Kui-Yi, Luo Xin-Yu,Jia Feng-Dong,Yu Cheng-Hui, Yin Ji-Ping, Xun Lin, You Li and Wang Ru-Quan*, Ultra-high efficiency magnetic transport of 87Rb atoms in a single chamber bose-einstein condensation apparatus, Chin. Phys. Lett. 31, 063701 (2014)

13. Xinyu Luo, Kuiyi Gao, Lu Deng*, Edward W. Hagley, and Ruquan Wang, Impact of photoassisted collisions on superradiant light scattering with Bose-Einstein condensates, Phys. Rev. A 86, 043603(2012)

14. Cao Qiang, Luo Xin-Yu, Gao Kui-Yi, Wang Xiao-Rui, Chen Dong-Min and Wang Ru-Quan*, Improved atom number with a dual color magneto-optical trap, Chin. Phys. B, 21, 043203(2012)