German researchers have built a quantum transistor using just a single atom

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A team of researchers at Germany’s Karlsruhe Institute of Technology have developed a quantum transistor using just a single atom, and capable of operating at room temperature.

The device points toward major new frontiers in computing power and efficiency. Transistors, which control the flow of electronic signals, are the basis of modern electronics. The steady reduction in the size and energy consumption of transistors has been the fundamental driver of advances in computing power for more than half a century.

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Single-atom transistor is end of Moore’s Law

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A controllable transistor engineered from a single phosphorus atom shown here in the center of an image from a computer model, sits in a channel in a silicon crystal.

The smallest transistor ever built — in fact, the smallest transistor that can be built — has been created using a single phosphorus atom by an international team of researchers at the University of New South Wales, Purdue University and the University of Melbourne.

The single-atom device was described Sunday (Feb. 19) in a paper in the journal Nature Nanotechnology.

Michelle Simmons, group leader and director of the ARC Centre for Quantum Computation and Communication at the University of New South Wales, says the development is less about improving current technology than building future tech…

Continue reading… “Single-atom transistor is end of Moore’s Law”