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your credit. Terms and conditions apply. Welcome to Tech News Briefing. It's Tuesday, February

25th. I'm Charlotte Gardenberg for the Wall Street Journal.

Last week, Microsoft researchers announced an approach to quantum computing that the company

claimed involved the creation of a new state of matter, not liquid, gas, or solid. That followed

Google in December, touting its own breakthrough in quantum chip design.

Both scientific advances were followed by a surge in quantum-related stock prices. But what is

quantum computing? And what exactly are researchers and investors betting it can do?

Here to give us a primer on quantum computing and take us through some of the potential

real-world applications of the tech is WSJ reporter Asa Fitch.

All right, Asa, we've talked about this before on the show, but it's worth recapping

for listeners given the recent news.

What is a quantum computer?

So a quantum computer is in a way like a normal

computer you and I use every day. Those computers use something called bits. There's a bunch of

little on-off switches that when you combine them together do different things like add things up or

tell your computer what to display on a screen. But a quantum computer use something called a qubit.

...