  The Su-Schrieffer-Heeger (SSH) model, commonly used for robust state
transfers through topologically protected edge pumping, has been generalized
and exploited to engineer diverse functional quantum devices. Here, we propose
to realize a fast topological beam splitter based on a generalized SSH model by
accelerating the quantum state transfer (QST) process essentially limited by
adiabatic requirements. The scheme involves delicate orchestration of the
instantaneous energy spectrum through exponential modulation of nearest
neighbor coupling strengths and onsite energies, yielding a significantly
accelerated beam splitting process. Due to properties of topological pumping
and accelerated QST, the beam splitter exhibits strong robustness against
parameter disorders and losses of system. In addition, the model demonstrates
good scalability and can be extended to two-dimensional crossed-chain
structures to realize a topological router with variable numbers of output
ports. Our work provides practical prospects for fast and robust topological
QST in feasible quantum devices in large-scale quantum information processing.
