Ching Hua Lee

Current Research

Synthetic and non-equilibrium condensed matter

Topological signatures are widespread in various synthetic topological metamaterials and non-equilibrium setups, with potential applications in photonics and electronics. Non-equilibrium effects lead to a number of new phenomena such as unconventional critical scaling behavior and emergent non-locality that modifies conventional bulk-boundary correspondences.

Specific directions include:

• non-Hermitian dynamics and phase transitions
• Floquet engineering of new phases
• topological photonics, mechanics and circuits
• topology of non-linear dynamics
• non-equilibrium complex networks
• dynamical nonlinear real-world phenomena, including epidemics

Strongly correlated systems

My group also explores the intriguing interplay of energetics and topology on strongly interacting particles. Current directions include:

• realization of non-abelian particles for topological quantum computing
• holography, entanglement entropy and conformal field theory
• fractional quantum Hall systems and Chern insulators
• condensed matter simulations on quantum computers (IBM Q)

Education

• Doctor of Philosophy (PhD) Stanford University (2010 — 2015)
• Bachelor of Science (B.S.) Stanford University (2006 — 2009)

Companies

• Assistant Professor National University of Singapore (2020)
• Research scientist II Institute of High Performance Computing (2017 — 2020)
• Research Scientist Institute of High Performance Computing (2015 — 2020)

Selected Publications

• Ching Hua Lee et. al, Imaging nodal knots in momentum space through topolectrical circuits, Nature Communications 11 (1), 1-13 (2020)
• Li, Linhu, Ching Hua Lee, Sen Mu, and Jiangbin Gong. “Critical non-Hermitian skin effect.” Nature communications 11, no. 1 (2020): 1-8
• Tobias Helbig, Ching Hua Lee et. al, Generalized bulk–boundary correspondence in non-Hermitian topolectrical circuits, Nature Physics 1-4 (2020)
• Koh, Jin Ming, Tommy Tai, Yong Han Phee, Wei En Ng, and Ching Hua Lee. “Stabilizing multiple topological fermions on a quantum computer.” arXiv preprint arXiv:2103.12783 (2021)
• Ching Hua Lee, Linhu Li and Jiangbin Gong, Hybrid higher-order skin-topological modes in nonreciprocal systems, Physical review letters 123 (1), 016805 (2019)
• Ching Hua Lee and Ronny Thomale, Anatomy of skin modes and topology in non-Hermitian systems, Physical Review B (Rapid Comm) 99 (20), 201103 (2019)
• Stefan Imhof, Ching Hua Lee et. al, Topolectrical-circuit realization of topological corner modes, Nature Physics 14 (9), 925 (2018)
• Ching Hua Lee, Wenwei Ho, Bo Yang, Jiangbin Gong and Zlatko Papić, Floquet mechanism for non-Abelian fractional quantum hall states, Physical review letters 121 (23), 237401 (2018)
• Bo Yang, Zi-Xiang Hu, Ching Hua Lee and Zlatko Papic, Generalized Pseudopotentials for the Anisotropic Fractional Quantum Hall Effect. Physical Review Letters 118 (14), 146403 Editor’s suggestion (2017)
• Ching Hua Lee, Zlatko Papic and Ronny Thomale, Geometric construction of Quantum Hall clustering Hamiltonians, Physical Review X 5 (4), 041003 (2015)