Interaction between single electrons in coupled quantum dots is used to perform binary logic operations in Quantum-dot Cellular Automata (QCA). Clocked control over tunneling is necessary to achieve power gain and minimize power dissipation in QCA. The high temperature limit for clocked operation is set by the ability of the cells to store binary information when the input signal is removed (so...

Quantum-dot Cellular Automata (QCA) are an emerging computation technology in which basic states are represented by nanosize particles and logic operations are conducted through corresponding effects such as Coulomb interaction. This allows to overcome physical boundaries of conventional solutions such as CMOS and, hence, constitutes a promising direction for future computing devices. Despite t...

In this paper, we propose a novel Quantum-dot Cellular Automata (QCA) based Programmable Switch Matrix which can be used as a routing element for future nano Field Programmable Gate Arrays (FPGAs). QCA technology is an emerging technology based on encoding binary information in charge configuration within quantum dot cells. In FPGAs, the Programmable Switch Matrix (PSM) is the interconnection c...

Quantum-dot cellular automata (QCA) is a novel and potentially attractive technology for implementing computing architectures at the nano-scale. By applying a set of simple layout rules, arbitrary circuits can be made using QCA cells. In this work, we describe the design and layout of a QCA random access memory (RAM), showing the layout of individual memory cells, as well as, a suggested layout...

Quantum-dot Cellular Automata (QCA) is one of the candidates among future nanoelectronic computing technologies. QCA is based on cells of coupled quantum dots. The QCA cells have features on the very low nanometer scale, much smaller than the present state of art size of the smallest transistor. The physical interaction between neighbouring cells has been exploited in the implementation of logi...

The most important mathematical operation for any computing system is addition. An efficient adder can be of greater assistance in designing of any arithmetic circuits. Quantum-dot Cellular Automata (QCA) is a promising nanotechnology to create electronic circuits for computing devices and suitable candidate for next generation of computing systems. The article presents a modest approach to imp...

Improved layout of QCA(quantum-dot cellular automata)based PLA (programmable logic array) that enhance the defect tolerance is proposed, in order to develop next generation circuit technology that replace the conventional CMOS technology. We analyze which QCA device (quantum-dot cell) limits the defect tolerance of the AND/OR plane cell of the QCA-PLA by using QCA circuit simulator or QCADesign...

Quantum-dot cellular automata (QCA) is an approach to computing that eliminates the need for current switches by representing binary information as the configuration of charge among quantum dots. For molecular QCA, redox sites of molecules serve as the quantum dots. The Coulomb interaction between neighboring molecules provides device–device coupling. By introducing clocked control of the QCA c...

We present the experimental demonstration of a basic cell of quantum-dot cellular automata (QCA), a transistorless computation paradigm which addresses the issues of device density and interconnection. The device presented is a six-dot quantum-dot cellular system consisting of a four-dot QCA cell and two electrometer dots. The system is fabricated using metal dots which are connected by capacit...