Is this actually for real? I mean do they really have working 512-qubit quantum computer and its possible to use it for some serious computing?
We're not there yet. I think around 2030 it'll start to become apparent.
I highly recommend reading Kurzweil's books. He talks about the law of accelerating returns. Basically, at some point in the next decade and a half, the technology we'll personally have access to will seem practically magic to what we have today just as what we have today would seem crazy to someone in 1993.
Things are progressing exponentially now. To imagine the difference between 2013 and 2023 you can't look at 10 years ago. You have to go 20 to 30 years ago. Similarly, the progress from 2008 to today seems insane (cloud computing, iPhone/Android, gains in voice recognition).
If it involves computing (as opposed to mechanical) the tech is going crazy.
Pretty soon we'll have some sort of Aug glasses. Then we'll have some device that feeds into our neocortex. Then we'll have an Aug chair or something. Then we'll have a Metaverse where we do most of our "stuff" rather than running around in our meat bodies. Then we'll start to off-load more and more of our neocortex components into "the cloud" and then we'll just think of the "meat" as an interface for dealing with the physical world.
Humans (as meat) will never go to Mars. In 25 years, it'll seem hilarious that we ever wanted to send humans to the moon or other planets (we'll certainly go to other planets but it'll be through our constructs, not through sending fragile water-carbon based meat bags <g>).
We'll never have robots in the sense that people imagined. We'll never have an R2D2 type thing. We'll never bother with hypersonic travel (again, meat).
Right now, everything I wrote above probably sounds crazy or extreme. In 10 years, it'll be patently obvious I think. In 10 to 20 years, the only reason we'll still want to "see" things with "our own eyes" will be cultural lag. If it weren't for cultural lag, the idea of humans needing to experience everything via their biological sensor array (i.e. our own nerves) would be absurd in 10 years.