量子元胞自动机器件和电路的研究进展  

Research Progress of Quantum Dot Cellular Automata Devices and Circuits

作　　者：杨晓阔[1] 蔡理[1] 李政操[1] 陈祥叶[1] 

机构地区：[1]空军工程大学理学院,西安710051

出　　处：《微纳电子技术》2011年第12期754-760,共7页Micronanoelectronic Technology

基　　金：国家自然科学基金(61172043);陕西省自然科学基础研究计划重点项目(2011JZ015);空军工程大学研究生科技创新计划项目资助

摘　　要：量子元胞自动机(QCA)是一种新颖的纳米技术,该技术不再通过电流或电压而是基于场相互作用进行信息的计算和传递。首先,综述了两种量子元胞自动机(EQCA和MQCA)器件的计算原理、基本逻辑门和时钟。指出了QCA元胞构成的不同线结构可在相同层交叉传递信号而不受影响。然后,进一步总结了制备QCA器件和功能阵列或电路的实验方法和材料,得出MQCA器件和分子EQCA器件的发展将使该器件逐步达到实际应用水平的结论。详细讨论了目前QCA器件和电路(尤其是存储单元结构)研究取得的重要进展以及面临的问题。提出了QCA器件未来理论和应用研究中的开放课题和方向。Quantum dot cellular automata （QCA） is a novel nanotechnology, the information of QCA is calculated and transferred not by the voltage or current, but by the field interaction. The computation principles, basic logic gates and clockings of two kinds of QCA （EQCA and MQCA） devices are introduced firstly. It shows that different wire structures comprised of QCA cells could realize planar crossover and transmit signals in a single layer independently. Furthermore, the experiment methods and materials to fabricate QCA devices and function arrays or circuits are summarized, and the conclusion is obtained that the development of MQCA and molecular EQCA devices would bring QCA up to the actual application level gradually. The research progresses and existent issues of QCA devices and circuits （particularly memory cell architecture） are discussed in detail. The open projects and directions in theory and application research of QCA are presented.

关 键 词：量子元胞自动机(QCA) 纳电子器件 纳磁体 电路设计 缺陷 

分 类 号：O471.1[理学—半导体物理] TN4[理学—物理]