Wenjie Wei Malu Zhang Jieyuan Zhang Ammar Belatreche Shuai Wang 0058 Yimeng Shan Hanwen Liu Honglin Cao Guoqing Wang 0001 Yang Yang 0002 Haizhou Li 0001 S<sup>2</sup>NN: Sub-bit Spiking Neural Networks. 2025 September abs/2509.24266 CoRR https://doi.org/10.48550/arXiv.2509.24266 db/journals/corr/corr2509.html#abs-2509-24266 streams/journals/corr