Bistable saturation in coupled quantum‐dot cells
Bistable saturation in coupled quantum‐dot cells
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DOI：
10.1063/1.354535
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发表时间：
1993-09
影响因子：
3.2
通讯作者：
P. Tougaw;C. Lent;W. Porod
中科院分区：
文献类型：
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作者：
P. Tougaw;C. Lent;W. Porod
研究了模型量子点细胞作为量子细胞自动机体系结构的潜在构件。每个电池都有几个电子，并与附近的电池发生库仑相互作用。在可接受的电池设计中，电荷密度倾向于沿两个电池轴中的一个对齐。因此，定义了可用于对二进制信息进行编码的信元‘’极化‘’。细胞的极化是以一种非常非线性的方式受到其邻居极化的影响。这种相互作用通过计算细胞-细胞响应函数来量化。研究了非零温度对模型细胞响应的影响。研究了多个邻居对单元的影响，并讨论了基于这些思想的可编程逻辑门结构。
Model quantum dot cells are investigated as potential building blocks for quantum cellular automata architectures. Each cell holds a few electrons and interacts Coulombically with nearby cells. In acceptable cell designs, the charge density tends to align along one of two cell axes. Thus, a cell ‘‘polarization,’’ which can be used to encode binary information, is defined. The polarization of a cell is affected in a very nonlinear manner by the polarization of its neighbors. This interaction is quantified by calculating a cell–cell response function. Effects of nonzero temperature on the response of a model cell are investigated. The effects of multiple neighbors on a cell are examined and programmable logic gate structures based on these ideas are discussed.