Department of Physics, College of Science, Huazhong Agricultural University, Wuhan 430070, China.
Department of Physics, Lanzhou University of Technology, Lanzhou 730050, China.
Chaos. 2021 Feb;31(2):023103. doi: 10.1063/5.0037032.
It was demonstrated recently that logical chaotic resonance (LCR) can be observed in a bistable system. In other words, the system can operate robustly as a specific logic gate in an optimal window of chaotic signal intensity. Here, we report that the size of the optimal window of chaotic signal intensity can be remarkably extended by exploiting the constructive interaction of chaotic signal and periodic force, as well as coupling, in a coupled bistable system. In addition, medium-frequency periodic force and an increasing system size can also lead to an improvement in the response speed of logic devices. The results are corroborated by circuit experiments. Taken together, a reliable and rapid-response logic operation can be realized based on periodic force- and array-enhanced LCR.
最近有人证明，双稳系统中可以观察到逻辑混沌共振（LCR）。换句话说，在混沌信号强度的最佳窗口中，系统可以稳健地作为特定逻辑门运行。在这里，我们报告在耦合双稳系统中利用混沌信号和周期性力的建设性相互作用以及耦合，可以显著扩展混沌信号强度的最佳窗口。此外，中频周期性力和增加系统尺寸也可以提高逻辑器件的响应速度。实验结果证实了这一点。总的来说，可以基于周期性力增强的 LCR 实现可靠和快速响应的逻辑操作。
