发表机构
The University of Tokyo; Institute of Industrial Science, The University of Tokyo; LAAS-CNRS; Aix Marseille Univ; Université de Toulon; CNRS; NTT Basic Research Laboratories; Institute for Solid State Physics, The University of Tokyo; ITODYS-CNRS（东京大学; 东京大学产业科学研究所; 法国国家科学研究中心 LAAS 实验室; 艾克斯-马赛大学; 土伦大学; 法国国家科学研究中心; NTT 基础研究实验室; 东京大学固体物理研究所; 法国国家科学研究中心 ITODYS 研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文通过微流控间隙中的二茂铁氧化还原循环，在室温下实现了扩散导体1/3散粒噪声抑制的普适性，并推导了电流及噪声的解析模型，经实验验证，为介观物理与电化学建立桥梁，开辟室温噪声探测分子动力学的新途径。
AI 中文摘要
扩散导体共享1/3的普适散粒噪声抑制。这一结果可通过量子散射、Boltzmann-Langevin动力学或对称简单排斥过程获得，但实验一直局限于低温条件，且对此普适性的理解仍不完整。在此我们表明，微流控间隙中的二茂铁氧化还原循环是该普适性在室温下的实现。我们推导了电流及其噪声的解析模型，并经实验证实。在扩散限制区域恢复了普适的1/3散粒噪声抑制，为介观物理学与电化学之间架起桥梁，为通过室温噪声测量探测分子动力学开辟了新途径。
英文摘要
Electrical noise measurement, especially shot noise, which arises from the discreteness of charge, is an indispensable tool in quantum transport for probing the nature of charge carriers beyond simple conductance measurements. Diffusive conductors share a universal shot noise reduction of 1/3, a result obtained independently from quantum scattering theory, semi-classical kinetics, or by classical exclusion processes8. Until now, however, experimental tests of this universality have been limited to cryogenic conditions, leaving its origin incompletely understood. Here we show that ferrocene redox cycling in a microfluidic gap is a room temperature realization of this universality. We derive the full counting statistics of diffusing single-electron molecular shuttles and verify the predicted current noise experimentally, showing that the universal 1/3 shot noise suppression is recovered in the diffusion-limited regime. Our result identifies diffusion and sequential charge transfer as sufficient ingredients for this universal noise reduction, rather than quantum coherence, fermionic statistics or cryogenic conditions. We anticipate that this study will establish electrochemical microfluidics as a room-temperature platform for mesoscopic counting statistics and bring noise-based probes to molecular transport and reaction kinetics. Furthermore, this liquid-based quantum-inspired study will provide a novel insight on the yet to be understood links between quantum and biology.
