Phase diagrams of spin-2 Floquet spinor Bose-Einstein condensates
Phys. Rev. A 113, 033313 – Published 31 March, 2026
DOI: https://doi.org/10.1103/lh6q-xm18
Abstract
We propose the realization of a spin-2 Floquet spinor Bose-Einstein condensate via Floquet engineering of the quadratic Zeeman energy. In the Floquet system, the coupling strengths of all angular-momentum-conserving spin-flip processes are renormalized by driving-parameter-dependent Bessel functions. Such Floquet-engineered interactions significantly enrich such possible states in homogeneous gases. We search for these possible states by using the variational method. Ground-state phase diagrams, which map the distributions of these possible states, are presented in the space of the driving parameters.
