4 ms·
It's much colder than that, single-digit millikelvin. They use He-3/4 dilution refrigerators [1]. Getting things cold and electromagnetically-quiet enough that
by zackbloom 5y ago
It's much colder than that, single-digit millikelvin. They use He-3/4 dilution refrigerators [1]. Getting things cold and electromagnetically-quiet enough that the quantum state doesn't collapse is a big challenge in the field.
1 - https://en.wikipedia.org/wiki/Dilution_refrigerator https://en.wikipedia.org/wiki/Dilution_refrigerator
- a9h74j 5y agoAnd some people think the brain can be deterministic at 300K.
- GoblinSlayer 5y agoWhy not? Computers are deterministic at higher temperatures.
- a9h74j 5y agoEven assuming a computer model, think of an analog computer with long integration times, potentially high gain for thermal noise terms, simulating a chaotic system. Or, look at literature on error rates for people performing simple repetitive tasks.
- thomasjudge 5y agoAnd if you need colder than 2mk, nuclear demagnetization: https://en.wikipedia.org/wiki/Magnetic_refrigeration#Nuclear_demagnetization https://en.wikipedia.org/wiki/Magnetic_refrigeration#Nuclear...