Add Yahoo as a preferred source to see more of our stories on Google. Quantum computers are coming. And when they arrive, they are going to upend the way we protect sensitive data. Unlike classical ...

Building on a landmark algorithm, researchers propose a way to make a smaller and more noise-tolerant quantum factoring circuit for cryptography. The most recent email you sent was likely encrypted ...

The original version of this story appeared in Quanta Magazine. Imagine a town with two widget merchants. Customers prefer cheaper widgets, so the merchants must compete to set the lowest price.