172
Real quantum computers always look like cheesy sci-fi movie prop computers.
(self.showerthoughts)
this post was submitted on 21 Dec 2024
172 points (98.3% liked)
Showerthoughts
30035 readers
678 users here now
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.
Rules
- All posts must be showerthoughts
- The entire showerthought must be in the title
- Avoid politics
- 3.1) NEW RULE as of 5 Nov 2024, trying it out
- 3.2) Political posts often end up being circle jerks (not offering unique perspective) or enflaming (too much work for mods).
- 3.3) Try c/politicaldiscussion, volunteer as a mod here, or start your own community.
- Posts must be original/unique
- Adhere to Lemmy's Code of Conduct
founded 2 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
I realized I've never actually seen a quantum computer. When I saw this post, I decided to look one up, and expecting them to look like some old storage server or something. I mean they can't look that antiquated, right?
Then I saw one on the Internet, and realized quantum computers look like THIS:
This is the interior of the computer. They hang it to reduce vibrations as well as thermal fluctuations. I work in a different area of physics, but my uni has one of these quant computers and I've spoken to my colleagues who work on it. When they need to run an experiment the whole setup gets enclosed in a vacuum-sealed container and brought down to near absolute zero. Really neat to see in person.
#not a quantum engineer
So allegedly most of what we see here is temperature control.
The qubits are stored in a chip in the bottom. Normal electronic stuff is at the top.
Each (circle) layer is kept at a different specific temperature. The normal electronic signals start at room temperature and cascade to lower and lower temperatures to interact with the qubits. The “reply” then cascades back up.
Most of that is the helium dilution refrigerator. Most electronic quits work at near absolute zero, so all of what you see here is wiring for the quantum computer (all those co-ax cables) and the equipment needed to manipulate the helium mixture to cool things down (you need the right mixture of helium isotopes because they boil at different temperatures so boiling away one isotope allows the remaining isotope to get even colder).
Yeah I really loved the look of the quantum computer in Alex Garland’s Devs
Turns out it’s pretty close to the real thing
Such an amazing show. Watched it blind with no idea of what I was getting into. And the soundtrack is right up there with Arrival's.
Absolutely. I’ve always been a big Nick Offerman fan and I loved his performance in it, a fantastic show all around.
They used that quantum computer as a reference for the show prop
Totally makes sense, I just happened to see them in reverse. But props to Alex and team for doing the research and seeing the beauty of an actual quantum computer and using that for the show. At the advanced level they’re at in the show, it probably won’t look so much like that as they get smaller and more efficient, but the “vacuum-tube-punk” aesthetic is really neat
It looks like a freakin' laser beam gun.
Jewish space laser?
They get better!!
How are those AI generated images relevant?
That's not the computer, that's the cooling system.
There is quite a bit more than just the cooling system in the picture. Coax cables take control signals from room temperature to the quantum processor and readout signals back. The signal paths include attenuation, filtering and amplification in various stages. The processor itself is in a magnetic shield, which is the grey cylinder at the bottom.