Linked by Thom Holwerda on Mon 20th Feb 2012 22:53 UTC
Hardware, Embedded Systems "A group of researchers has fabricated a single-atom transistor by introducing one phosphorous atom into a silicon lattice. Through the use of a scanning tunnelling microscope and hydrogen-resist lithography, Martin Fuechsle et al. placed the phosphorous atom precisely between very thin silicon leads, allowing them to measure its electrical behavior. The results show clearly that we can read both the quantum transitions within the phosphorous atom and its transistor behavior. No smaller solid-state devices are possible, so systems of this type reveal the limit of Moore's law - the prediction about the miniaturization of technology - while pointing toward solid-state quantum computing devices."
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Density or Size
by stestagg on Tue 21st Feb 2012 14:56 UTC
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A one atom transistor surrounded by 3m^2 of machinery isn't a very high transistor density. I think there's still scope for improvement here ;)

Reply Score: 2

RE: Density or Size
by Neolander on Tue 21st Feb 2012 15:02 in reply to "Density or Size"
Neolander Member since:

This is not necessarily a problem for some applications though, as long as they manage to pack a lot of stuff in that big box.

Case in point : the other day, I've heard about a breakthrough in quantum computers based on trapped ions. By using the near field of regular microwave antennas instead of stabilized lasers for cooling, they managed to pack ten times as much ions on a chip as they did before.

Now if they manage to have tons of qubits per chip and tons of chips per cryogenic vacuum chamber, they might get something that is worthwhile for HPC...

Edited 2012-02-21 15:03 UTC

Reply Parent Score: 1