5 papers
Quantum geometric bounds at finite temperature for one-dimensional chiral systems
Peng He, Hai-Tao Ding, Yu-Guo Liu
The geometry and topology of quantum states are intimately related at zero temperature through exact bounds that constrain geometric quantities from below by topological invariants…
The Geometric Phase as a Diagnostic for Driven-Dissipative Oscillators
Zeen Sun, Yuan Shen, Haitao Ding +2
Driven-dissipative quantum oscillators lock their phase, deform their limit cycles, and undergo dissipative phase transitions, yet these behaviors are read from unrelated quantitie…
Manipulation of Topological Corner States via Subchiral Symmetry
Hai-Tao Ding, Tianqi Chen, Leong-Chuan Kwek +1
Higher-order topological phases provide robust corner modes, but their use requires controllable creation, isolation, and transfer of individual modes and their superpositions. Her…
Floquet quantum geometry in periodically driven topological insulators
Peng He, Jian-Te Wang, Jiangbin Gong +1
Quantum geometry plays a fundamental role across many branches of modern physics, yet its full characterization in nonequilibrium systems remains a challenge. Here, we propose a fr…
Direct measurement of the quantum geometric tensor in pseudo-Hermitian systems
Ze-Hao Huang, Hai-Tao Ding, Li-Jun Lang
The quantum geometric tensor (QGT) fundamentally encodes the geometry and topology of quantum states in both Hermitian and non-Hermitian regimes. While adiabatic perturbation theor…