Looks cool. Trying to find out what a “nitrogen-vacancy center” is turned up this article.

An NV center forms when a nitrogen atom replaces a carbon atom in the diamond crystal lattice and sits adjacent to a carbon-atom vacancy. The nitrogen atom and the vacancy together trap electrons, and the resulting negatively charged NV center has an electronic spin of 1, enabling it to serve as a three-level quantum system

IDK enough about this to know how legit it is, it seems like the kind of thing that is likely oversold if not pure bullshit, but I hope it is legit. I think it’d be cool to have an 8 or 16 qbit processor to play with without having to deal with all the liquid nitrogen.

quantencomputer konnten immer schon bei raumtemperatur laufen, die frage ist nur, was dann noch der kohärenzgrad ist. also wie viele rechenschritten können hintereinander ausgeführt werden, bevor der zustand im system zerfällt?

edit: sry english translation:

Quantum computers have always been able to run at room temperature, the only question is what the degree of coherence then is. So how many calculation steps can be executed in a row before the system’s internal state decays?

Well its a Fraunhofer startup. So no bullshitting to get the next funding round. Just internal numbers though and already shipping hardware. It is already used by DLR. Reads l like a strong academic background which is a good sign this might be legit. The catch is probably the number of usable qbits.

"…
a Leipzig-based startup spun out of Universität Leipzig (Germany) in 2021, just announced two diamond-based quantum processors — the SXQ128 (128 qubits) and SXQ512 (512 qubits) 
…
The technology hinges on nitrogen-vacancy centers — point defects in synthetic diamond where a nitrogen atom and an adjacent gap in the crystal lattice form a spin qubit that maintains coherence for milliseconds at room temperature. Well-documented physics, in other words. The manufacturing was the wall.

Historically, only 1 to 10 percent of implanted NV centers actually worked. Think of it like running a chip fab where nine out of ten processors come off the line dead — for thirty years straight. SAXON Q reports its patented sulfur co-implantation process pushes that yield above 85 percent, enabling the dense, predictable qubit arrays needed for scalable production. Gate fidelities reportedly hit 99.92 percent, meaning fewer than one error per thousand operations.
… "