✔ 最佳答案
You can get so far by exposing all your equipment to absolute zero using liquid helium. Then you do a trick of stopping spins using a hit of magnetism. Then you use a bunch of tricks that get you within a few hundreds of a degree K of Absolute zero. And then, and then,---
They aren't really sure what will happen beyond what they have achieved but it will be expensive to get there.
參考: The research fellow who worked for Corning Inc. was not hopeful of ever reaching absolute zero. He produced a sensor that would record the temperature all the way down (he hoped!!!