What's Wrong With Quantum Computing

You've heard plenty of people by now—including us—banging on about quantum computers, and how they’re the future of high-performance computing. Quantum computing, we're meant to understand, is set to change the world. But despite its promise, it's neither widely available nor particularly useful yet. Here's why not. » 10/25/13 11:00am 10/25/13 11:00am

Inside the Beating Heart of an Optical Atomic Clock

Behold, the beating heart of a time machine! Or "clock", as most people call them, but this one is nothing like your grandfather's. This super-accurate timekeeper is an optical atomic clock built by the UK's National Physical Laboratory (NPL) and its tick is governed by a single ion of the element strontium. » 2/05/13 9:20am 2/05/13 9:20am

IBM Busts Record for ‘Superconducting’ Quantum Computer

Today's quantum computers are no more than experiments. Researchers can string together a handful of quantum bits - seemingly magical bits that store a "1″ and "0″ at the same time - and these ephemeral creations can run relatively simple algorithms. But new research from IBM indicates that far more complex quantum… » 2/28/12 6:40am 2/28/12 6:40am