Quantum Computers Can Get Colder Than Deep Space — Here's How They Stay Running

https://www.engadget.com/img/gallery/quantum-computers-can-get-colder-than-deep-space-heres-how-they-stay-running/l-intro-1792594079.jpg

Why do they need to be so cold, anyway?

Phonlamai Photo/Shutterstock

One of the coldest places in the universe isn't on some distant planet or at an empty point between galaxies. It's here on Earth, inside a lab. Deep space sits at about 2.7 Kelvin (454.8 degrees below zero in Fahrenheit), in the leftover glow of the Big Bang, according to Space.com. IBM's latest modular cryogenic system is cooled below 15 millikelvin, which the company describes as more than 180 times colder than deep space. That's a hair above absolute zero.

So how does IBM get a machine colder than deep space, and perhaps more importantly, why bother? How will it benefit us warm-blooded humans? The answer starts with what's being kept cold: the qubit.

What is a qubit, and how does it differ from a bit?

Regular computers calculate using bits: tiny switches that are either 1 or 0,...

Copyright of this story solely belongs to www.engadget.com. To see the full text click HERE