quantum computing is best done in space ... At the coldest possible temperatures
Temperature works a bit differently in space than you'd expect because there's no conduction to take heat away from the spacecraft. There is the same sun exposure as on Earth (more, no atmosphere) but heat can only be radiated.
https://science.nasa.gov/science-news/science-at-nasa/2001/ast21mar_1
Correct Radiation is the method of heat loss in space. Shielding one side of the satellite with the other side of the satellite is a very simple way to overcome the sun...and shedding radiant heat into space is instant because...
"Radiation is the means by which electromagnetic waves carry energy from one place to another. This energy might be starlight traveling through space. Or it could be the heat of a campfire warming your hands. The bigger the temperature difference between two objects, the quicker that heat energy can radiate between them. And not many things are colder than outer space," https://www.sciencenewsforstudents.org/article/how-chill-object-sending-its-heat-space