Article ID Journal Published Year Pages File Type
546592 Microelectronics Journal 2008 4 Pages PDF
Abstract

We report on the experimental demonstration of a four-dot cell on a GaAs/AlGaAs substrate fabricated using electron beam lithographically defined gates. These surface metallic gates form a pair of double quantum dots, as well as a pair of quantum point contacts that act as non-invasive voltage probes. This device is used to realize a quantum cellular automata cell and, in further experiments, we employ it to investigate photon assisted tunneling. These results prove that the four-dot cell is a good building block candidate toward fulfilling the scalability DiVincezo criteria.

Related Topics
Physical Sciences and Engineering Computer Science Hardware and Architecture
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