这项工作报道了基于莫特材料的纳米级耦合尖峰振荡器的同步，其与传统的谐波振荡器的同步完全不同。研究人员研究了由于器件的紧密物理接近而引起的热相互作用介导的尖峰纳米振荡器的同步。通过控制驱动电压，可以使相邻振荡器之间实现同相1:1和2:1整数同步模式，这两种整数模式之间的跃迁是通过一种不寻常的随机同步机制发生的，而不是损失尖峰相干性。
在随机同步机制下，属于1:1和2:1整数模式的随机长度尖峰序列是混合的。这种随机性的出现是设计大规模峰值网络以实现新的计算范式（如神经形态和随机计算）时必须考虑的一个重要因素。
附：英文原文
Title: Stochastic transition in synchronized spiking nanooscillators
Author: Qiu, Erbin, Salev, Pavel, Torres, Felipe, Navarro, Henry, Dynes, Robert C., Schuller, Ivan K.
Issue&Volume: 2023-9-11
Abstract: This work reports that synchronization of Mott material-based nanoscale coupled spiking oscillators can be drastically different from that in conventional harmonic oscillators. We investigated the synchronization of spiking nanooscillators mediated by thermal interactions due to the close physical proximity of the devices. Controlling the driving voltage enables in-phase 1:1 and 2:1 integer synchronization modes between neighboring oscillators. Transition between these two integer modes occurs through an unusual stochastic synchronization regime instead of the loss of spiking coherence. In the stochastic synchronization regime, random length spiking sequences belonging to the 1:1 and 2:1 integer modes are intermixed. The occurrence of this stochasticity is an important factor that must be taken into account in the design of large-scale spiking networks for hardware-level implementation of novel computational paradigms such as neuromorphic and stochastic computing.
DOI: 10.1073/pnas.2303765120
Source: https://www.pnas.org/doi/10.1073/pnas.2303765120