3 papers
quant-ph2026
Geometric Phases of a Driven Qubit: Comparing Berry and Uhlmann Holonomies
Hyeonseok Yang, Changsuk Noh
The Berry phase arises naturally from the adiabatic dynamics of a pure quantum state, whereas the Uhlmann phase is usually formulated kinematically for a prescribed path of mixed s…
quant-ph2026
Geometric phase of open paths and a geodesic-selection rule at a level degeneracy
Hyeonseok Yang, Changsuk Noh
When the control field of a qubit, a polarization state, or a spin- system is swept through a level degeneracy, its direction traces an open curve on the Bloch sphere who…
quant-ph2025
Quantization of nonlinear non-Hamiltonian systems
Andy Chia, Wai-Keong Mok, Leong-Chuan Kwek +1
Several important dynamical systems are in , defined by the pair of differential equations . A question of fundamental importance is how such…