Spin-Based True Random Number Generation Enabled by Voltage-Amplified Quantum Fluctuations
Abstract
We investigate spin quantum-fluctuation effects that originate from the Heisenberg uncertainty principle during the dynamical cycle of disentanglement, entanglement, and re-disentanglement between itinerant electrons and localized magnetic moments mediated by the s-d exchange interaction. Beyond conventional deterministic spin-transfer torque, we analyze an intrinsic mechanism that transfers spin quantum fluctuations to a nanomagnet. By extending the Landau-Lifshitz-Gilbert equation to incorporate both quantum and thermal stochastic fields, we identify a temperature regime in which quantum fluctuations dominate the magnetization dynamics. We further show that voltage-controlled magnetic anisotropy exponentially amplifies spin quantum fluctuations, enabling binary readout through magnetoresistance in magnetic tunnel junctions. These findings provide a microscopic framework for fluctuation-driven spin dynamics and outline a device-level pathway toward spin-based quantum true random number generation.
Cite
@article{arxiv.2511.05388,
title = {Spin-Based True Random Number Generation Enabled by Voltage-Amplified Quantum Fluctuations},
author = {Jie Zheng and Jiyong Kang and Zheng Zhu and Di Wu and Yuesheng Li and Dongxing Yu and Jiayong Wang and Hongxing Xu and Chenglong Jia},
journal= {arXiv preprint arXiv:2511.05388},
year = {2026}
}
Comments
Revised title for clarity