https://thenextweb.com/science/2019/10/24/ibm-quantum-physics-researchers-make-atoms-dance-on-a-needles-point/

IBM Research today revealed a breakthrough nanotechnology technique that allows researchers to position individual atoms and control their quantum properties. This could be a watershed moment on the path to generally useful quantum computers.

The research team developed the technique in order to build a quantum computing simulator. Binary computers – like the kind you’re using to read this article on – only understand ones and zeros. They work like a light switch, they’re either on or off. Quantum computers have a third option. They can be both on and off at the same time. This is because of a quantum property called superposition.