The press release is complete garbage, none of the words randomly used there ("quantum", "integrated circuit" etc.) provide any kind of correct information, in that context.
On the other hand the Nature article and the research results are very interesting.
This has nothing to do with "quantum computers" or "integrated circuits".
The device is a special-purpose analog computer, which can simulate systems described by quantum mechanics, e.g. molecules, like the traditional analog computers, a.k.a. differential analyzers, which were used before WWII to simulate any systems that can be described by a system of differential equations.
However, for now, this isn't any kind of programmable computer.
To simulate another molecule, you have to build another analog computer, i.e. molecule simulator, with different spacings and sizes for the semiconductor quantum dots, though in the future they might achieve some degree of reconfigurability, to maybe simulate several kinds of molecules with a single quantum simulator.
