Enlarge / This optical
setup is not your friend. Many fast switches and delay lines set up
to arrange for 20 photons to enter the waveguide circuit
simultaneously. (credit: Hui Wang, Hefei
The big quantum buzzword these days is “quantum supremacy.”
(It’s a term I despise, even as I acknowledge that the concept has
some utility. I will explain in a moment). Unfortunately, this
means that some researchers have focused on quantum supremacy as an
end in itself, building useless devices to get there.
Now, optical quantum computers have joined the club with a
configured device that doesn’t quite manage to demonstrate
quantum supremacy. But before we get to the news, let’s delve into
the world of quantum supremacy.
The quest for quantum supremacy
“Quantum supremacy” boils down to a failure of mathematics,
combined with a fear that the well will run dry before we’ve
drunk our fill.
Source: FS – All – Science – News
Why I dislike what “quantum supremacy” is doing to computing research