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Moore's law was enabled by lithography which enabled a pretty clear path forward on how to shrink transistors over time. AFAIK there is no similar enabling tech
by seiferteric 3y ago
Moore's law was enabled by lithography which enabled a pretty clear path forward on how to shrink transistors over time. AFAIK there is no similar enabling technology for qubit. Maybe that will change, but until then, I don't really see much hope for quantum computers future.
- cma 3y agoYou only need a linear increase in number of error-corrected qubits to get exponential gains on the limited subset of problems they can improve, whereas Moore's law has provided an exponential increase in the number of elements for classical computers. So, Moore's law isn't needed for something similar to Moore's law gains in quantum computing, a linear Moore's law will do if quantum error correction doesn't face scaling laws for the whole ensemble. That might mean they only keep pace with classical computing if Moore's law continues to hold there, but eventually that hits the Landauer limit without new physics (or possibly reversible computing).
- adgjlsfhk1 3y agoIMO this is very wrong. Most real applications of quantum computers will need thousands of error correct qbits (aka millions of real qbits). At the current growth rate in qbits of <100 qbits per year, if the growth was linear, it would be about 10000 years before we had quantum computers solving real problems.
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- kevindamm 3y agoI get the impression that cavity-QED is a similar path for QC that lithography was for classical compute. But I'm not at all an expert, just a curious and interested observer.