| 摘要 |
A nonlinear coupling oscillator array is configured in such a manner that, for example, two layers in each of which a number of quantum dots as oscillators are arranged two-dimensionally are laid one on another. Adjacent quantum dots in the upper layer have tunnel coupling that exhibits a nonlinear current-voltage characteristic. The quantum dots in the upper layer receive an input of initial data/bias current, and each quantum dot in the upper layer is coupled with one quantum dot in the lower layer via a gate function having a time constant. Adjacent quantum dots in the lower layer do not interact with each other and the quantum dots in the lower layer are connected to the ground. For example, initial data are input by generating electron-hole pairs by applying light having an intensity profile corresponding to data, and injecting resulting electrons into the quantum dots of the upper layer. For example, bias current is given by applying light having an intensity profile that is constant temporally and spatially. As time elapses from the input of initial data, there appears a dynamic pattern, that is, a rotating spiral pattern, corresponding to the initial data. The data is stored in this manner.
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