"In the early 1980s, Levitin singled out a quantum elementary operation, the most basic task a quantum computer could carry out. In a paper published today in the journal Physical Review Letters, Levitin and Toffoli present an equation for the minimum sliver of time it takes for this elementary operation to occur. This establishes the speed limit for all possible computers (emphasis added)."The point is that there are no silver bullets or ways in which this limit can be circumvented. It is based on the most fundamental operation that can occur. Unless a new quantum theory is developed, this limit represents a natural boundary that cannot be crossed by architecture or technology.
http://www.livescience.com/technology/091009-computer-speed.html
Computing Speed Limit
It seems that some people have misinterpreted the recent publication of Levitin and Toffoli's paper as implying that somehow there are alternative technologies or approaches that can salvage Moore's Law. This is incorrect.
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