Figure 1: Defective couple. | Nature

Figure 1: Defective couple.

From: Qubits in the pink

Figure 1

Hanson and colleagues' experiments1 look at nitrogen–vacancy (NV) defects in the proximity of nitrogen (N) defects in the lattice of carbon atoms that makes up diamond. By tuning the energy of the spin states of the defects using a magnetic field, the defects can be brought into resonance, exchanging energy and polarization via so-called virtual photons. This interaction allows spin control of the nitrogen defect using optical control of the NV defect, and the combined system forms a promising two-qubit structure for quantum computing.

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