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Electric cooling could shrink quantum computers
- baz00 3y agoHave they made them useful yet?
- westurner 3y agoHow does electric cooling compare to say optoelectronic laser cooling in terms of cost and efficiency? Laser cooling: https://en.wikipedia.org/wiki/Laser_cooling https://en.wikipedia.org/wiki/Laser_cooling
- throw1234651234 3y agoIs any of this used in practice? I don't see a "(Practical) Applications" section.
- westurner 3y agoQC and Quantum Simulation: /? laser cooling quantum simulation https://www.google.com/search?q=Laser+cooling+quantum+simulation https://www.google.com/search?q=Laser+cooling+quantum+simula... From https://phys.org/news/2016-04-laser-cool-quantum-liquid.amp https://phys.org/news/2016-04-laser-cool-quantum-liquid.amp : > In the experiments, the team created a superfluid helium film on a silicon chip. > They then used a bright laser beam to draw energy out of waves on the surface of the superfluid, cooling them. > In addition to laser cooling, the research team showed that combining superfluid with microphotonics allows extremely precise measurements of superfluid waves Additionally, FWIU there are now inexpensive integrated lasers from which a laser cooling array could be built to enclose a QC sim
- pfdietz 3y agoIt would be interesting if it were used to cool laser sails, which might enable very high power levels for interstellar travel. This of course is not currently possible for multiple reasons.
- petsfed 3y agoBased on the wikipedia article, macroscopic laser cooling is largely used for cooling gases. Insofar as I'm aware, laser cooling is always used as the final stage of gas cooling, on top of more standard methods, because there are more efficient methods to go from e.g. room temperature to cryogenic temperatures, and cryogenic to near-absolute-zero temperatures and so on. The method in the article, as I understand it, is meant specifically to address the cooling that's typically done with e.g. liquid nitrogen and liquid helium, not necessarily what's done below Helium-4's condensation temperature. The article is definitely too vague to know if thermionic cooling addresses a Helium-3 stage or not.
- gaze 3y agoThey have very different applications. Laser cooling has extremely low cooling power but can reach low temperatures. It’s good for cooling a gas of atoms or even individually trapped atoms. A dilution refrigerator, as are used in superconducting quantum computing and other low temperature condensed matter experiments, could cool a sandwich. We’re talking maybe a milliwatt of cooling power. Electronic cooling — I don’t know.
- westurner 3y agoDilution refrigerator: https://en.wikipedia.org/wiki/Dilution_refrigerator https://en.wikipedia.org/wiki/Dilution_refrigerator Timeline of low-temperature technology: https://en.wikipedia.org/wiki/Timeline_of_low-temperature_technology https://en.wikipedia.org/wiki/Timeline_of_low-temperature_te...
- mkmk3 3y agoThanks, I've been meaning to delve deeper into this topic for a while now and that timeline is gold
- gobdovan 3y agoDevices - thermionic, Cooling - electronic, Atomic vibrations? Number of applications! 3-D integration and space exploration