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Why do quantum computers look like gorgeous golden chandeliers?
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this post was submitted on 06 Jul 2024
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the methods required to maintain qubits are exotic.
this site mentions the refrigeration equipment youre referencing i believe https://www.pnnl.gov/news-media/new-superconducting-qubit-testbed-benefits-quantum-information-science-development
This is the right answer. It's a big cryogenic refrigerator called a Dilution Refrigerator. It's fancy stuff. Needs Helium-4, which is more common, and Helium-3, which mostly comes from nuclear production.
how in the absurd fuck do they get something that cold
lots of fun techniques, a common one for getting down low enough where other methods become practical is stirling cryocoolers, and those are even on ebay for a few thousand (cascade refrigeration systems, and joule thompson coolers, and a few others are also used), way down past that theres stuff like weird magnetic coolers, and dilution coolers All very interesting, reading about exotic cooling methods is quite fun.
With a refrigerator.
That's a very big refrigerator