Light control of triplet pairing in correlated electrons with mixed-sign interactions

Spin-triplet superconductivity is a key platform for topological quantum computing, yet its experimental realization and control in solid-state materials remain a significant challenge. For this purpose, we propose an ultrafast optical strategy to manipulate spin-triplet superconductivity by leveraging p-wave pairing instabilities in the extended Hubbard model, a framework applicable to transition-metal oxides. Utilizing Floquet engineering, we demonstrate that transient flipping of the effective spin-exchange interaction can enhance p-wave pairing correlations under linearly polarized optical pulses. Furthermore, we reveal that this emergent spin-triplet pairing in strongly correlated systems can be selectively switched by an orthogonal optical pulse. This work provides a pathway for stabilizing and controlling spin-triplet superconductivity in correlated materials. Spin-triplet superconductivity offers a promising route to topological quantum computation, yet its realization and control in solids remain challenging. Here, through the framework of Floquet engineering, the authors propose using polarized-laser irradiation to selectively manipulate p- wave pairing correlations for transition metal oxide systems and verify its feasibility using a dynamical simulation.