Preparation of the single-spinon wave function on a quantum computer

We address the problem of how to prepare single-spinon wave functions, relevant for one-dimensional $S=1/2$ spin models, in a quantum computer. We adopt the recently proposed ansatz [Kulka et al., Phys. Rev. Lett. 134, 236504 (2025)] for the single-spinon wave function, where a state with $S=1/2$ is