|
| westurner wrote:
| How does electric cooling compare to say optoelectronic laser
| cooling in terms of cost and efficiency?
|
| Laser cooling: https://en.wikipedia.org/wiki/Laser_cooling
| throw1234651234 wrote:
| Is any of this used in practice? I don't see a "(Practical)
| Applications" section.
| westurner wrote:
| QC and Quantum Simulation:
|
| /? laser cooling quantum simulation https://www.google.com/se
| arch?q=Laser+cooling+quantum+simula...
|
| From 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
| petsfed wrote:
| Based 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.
| baz00 wrote:
| Have they made them useful yet?
| trwaw wrote:
| [dead]
| datameta wrote:
| I think what is missing (and I'm stretching my understanding
| here) is the right doping mixture and crystal structure to get
| a high enough efficiency of emissions from the junctions.
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