When an atom is excited into a Rydberg state, its electronic wavefunction can extend to several nanometres. This process can be used to induce and coherently control interactions between atoms that are far enough apart to be non-interacting in their normal states. Now, such behaviour has been realized in a solid-state context, by demonstrating coherent control of the wavefunctions of phosphorus dopant atoms in silicon.
- P. T. Greenland
- S. A. Lynch
- G. Aeppli
