Sub-second volumetric 3D printing by synthesis of holographic light fields

Some press coverage (though I highly recommend just reading the paper linked as the OP, it’s quite approachable to skim without prior knowledge, and you get to see how they turn the Star Trek replicator problem into “just” a loss optimization problem with projectors and spinning mirrors!):

https://aminsightasia.com/education/tsinghua-dish-3d-printin...

And as other have noted, it’s worth bearing in mind that most images here are less than a centimeter in scale; the scale bar is a millimeter. Super impressive stuff.

Figure 5g: not that impressive a Benchy. But printed much faster, presumably.

ELI5?

Is this a Star Trek replicator or what?