Physics Practical Magic

Scientists stuffed a single molecule inside a carbon shell and made it do complex math.

March 30, 2026

Original Paper

A Sc2C2@C88 cluster based ultra-compact multi-level probabilistic bit for matrix multiplication

Haoran Qi, Guohao Xi, Yuan-Biao Zhou, Xinrong Liu, Yifu Mao, Jian Yang, Jun Chen, Kuojuei Hu, Weiwei Gao, Shuai Zhang, Xiaoqin Gao, Jianguo Wan, Da-Wei Zhou, Junhong An, Xuefeng Wang, De-Chuan Zhan, Minhao Zhang, Cong Wang, Wei ji, Yuan-Zhi Tan, Su-Yuan Xie, Fengqi Song

arXiv · 2603.26198

The Takeaway

Instead of traditional silicon transistors, this device uses the natural, random jittering of atoms inside a molecule to find answers. By harnessing this randomness, researchers were able to factor numbers like 551, moving us closer to 'intelligent' electronics that operate at the fundamental limit of physical size.

From the abstract

Information units are progressively approaching the fundamental physical limits of the integration density, including in terms of extremely small sizes, multistates and probabilistic traversal. However, simultaneously encompassing all of these characteristics in a unit remains elusive. Here, via real-time in situ electrical monitoring, we clearly observed stochastic alterations of multiple conductance states in Sc2C2@C88. The true random bit sequence generated exhibited an autocorrelation functi