Valizadeh Alireza
Institute for Advanced Studies in Basic Sciences, P.O. Box 45195-1159, Zanjan, Iran.
Phys Rev E Stat Nonlin Soft Matter Phys. 2012 Jul;86(1 Pt 2):016101. doi: 10.1103/PhysRevE.86.016101. Epub 2012 Jul 6.
We consider an array of inductively coupled Josephson junctions with a fast impurity (a junction with a smaller value of the critical current) and study the consequences of imposing a small amplitude periodic signal at some point in the array. We find that when the external signal is imposed at the impurity, the response of the array is boosted and a small amplitude signal can be detected throughout the array. When the signal is imposed elsewhere, minor effects are seen on the dynamics of the array. The same results have also been seen in the presence of a single fast-spiking neuron in a chain of diffusively coupled FitzHugh-Nagumo neurons.
我们考虑一个具有快速杂质（临界电流值较小的结）的电感耦合约瑟夫森结阵列，并研究在阵列中的某一点施加小幅度周期性信号的后果。我们发现，当外部信号施加在杂质处时，阵列的响应会增强，并且可以在整个阵列中检测到小幅度信号。当信号施加在其他地方时，对阵列的动力学只会产生微小影响。在扩散耦合的菲茨休 - 纳古莫神经元链中存在单个快速发放神经元的情况下，也观察到了相同的结果。
