Why do most quantum computers need to be colder than space?

The large, golden chandelier-like structure that has come to represent quantum computers in popular culture is actually just a refrigerator. The quantum computer part is located at the bottom, where temperatures are cooler than those at the bottom Bounce nebulaThe coldest natural place in the known universe.

Most quantum computers need to be kept at temperatures less than one degree above absolute zero. This is because the qubits that these computers use in their calculations, Whether it is physical atoms or geometric quantum circuitsvery sensitive to external forces, including heat.

I spoke with a representative from Blueforcea company that specializes in making large dilution refrigerators designed to remove heat from quantum systems. I wanted to understand how it works and why this technology is needed to help deliver on the promise of quantum computing. Check out my video, embedded in this article.