Experimental Demonstration of Radio Frequency Quantum-Dot Cellular Automata Devices (Paperback)

Over the past four decades the transistor-based microelectronics industry has developed dramatically. As transistor size approaches nanometer range, many problems such as device interconnection, power dissipation and short-channel effects become increasingly hard to overcome and degrade device performance. A new computation paradigm named Quantum-dot Cellular Automata (QCA) provides a possible solution for transistor-less circuitry design and computation at the nanometer scale. In a QCA structure, binary information is encoded by the bi-stable charge configuration within quantum-dot cells, and neighboring cells are coupled by the Coulomb interaction. No current flows within the cells. Functional QCA logic devices such as binary wires, majority gates, shift registers and fan-outs have been demonstrated in metal-dot systems at dilution refrigerator temperatures (