TMPO: Trajectory Matching Policy Optimization for Diverse and Efficient Diffusion Alignment. - Jiaming Li; Chenyu Zhu; Nanxi Yi; Youjun Bao; Li Sun; Quanying Lv; Xiang Fang; Daizong Liu; Jianjun Li 010; Kun He 001; Bowen Zhou 002; Zhiyuan Ma 005 (CoRR, 2026)