Electron-mediated nuclear-spin interactions between distant nitrogen-vacancy centers

Phys Rev Lett. 2011 Oct 7;107(15):150503. doi: 10.1103/PhysRevLett.107.150503. Epub 2011 Oct 3.

Abstract

We propose a scheme enabling controlled quantum coherent interactions between separated nitrogen-vacancy centers in diamond in the presence of strong magnetic fluctuations. The proposed scheme couples nuclear qubits employing the magnetic dipole-dipole interaction between the electron spins and, crucially, benefits from the suppression of the effect of environmental magnetic field fluctuations thanks to a strong microwave driving. This scheme provides a basic building block for a full-scale quantum-information processor or quantum simulator based on solid-state technology.