Achieving adiabatic high-fidelity state transfer on photonic chips is essential for scalable quantum information processing, but remains challenging due to the trade-off between robustness and device compactness. The recently reported adiabaticity control limit (ACL) overcomes this challenge by inverse designing compact couplers. However, the numerical nature and example restriction of the ACL to three-waveguide systems hinder generally analytical insight and scalability. Here we develop an analytically optimized coupling framework that pushes the multiwaveguide topological pumping toward the ACL. By generalizing the conventional trigonometric modulations to a power-law profile in a Su-Schrieffer-Heeger lattice, guided by a global adiabatic criterion to minimize spatial nonadiabatic fluctuations, we suppress the nonadiabatic transitions even in dramatically shortened devices. Numerical simulations demonstrate a fourfold reduction in the required device length while maintaining a transfer fidelity exceeding $95\%$. Furthermore, we showcase the versatility of this approach by designing a compact topological photonic splitter for applications in functional photonic devices. Our work establishes a practical paradigm for fast, high-fidelity topological state transfer, bridging the critical gap between analytic design and the ACL in scalable photonic networks.

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• Adiabatic quantum optimization
• Edge states
• Integrated optics
• Quantum control
• Topological effects in photonic systems