Two-beam coupling by nitrogen-vacancy centers in diamond

Two-beam coupling by nitrogen-vacancy centers in diamond.

Intersecting laser beams with finite detuning are typically used to generate slowly moving optical gratings in absorptive solids with phases that lead those of refractive-index changes caused by slow excited-state dynamics. Energy transfer between pump and probe waves then occurs, with detuningdependent gain. This method has been employed to study nonlinearities in Cr-doped laser materials2 wit...

Coupling Nitrogen-Vacancy Centers in Diamond in Superconducting Flux Qubits

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Coupling nitrogen-vacancy centers in diamond to superconducting flux qubits.

We propose a method to achieve coherent coupling between nitrogen-vacancy (NV) centers in diamond and superconducting (SC) flux qubits. The resulting coupling can be used to create a coherent interaction between the spin states of distant NV centers mediated by the flux qubit. Furthermore, the magnetic coupling can be used to achieve a coherent transfer of quantum information between the flux q...

Modification of the spontaneous emission rate of nitrogen-vacancy centers in diamond by coupling to plasmons

Nitrogen-vacancy centers in diamond are widely studied both as a testbed for solid state quantum optics and for their applications in quantum information processing and magnetometry. Here we demonstrate coupling of the nitrogen-vacancy centers to gap plasmons in metal nano-slits. We use diamond samples where nitrogen-vacancy centers are implanted tens of nanometers under the surface. Silver nan...

Diamond nitrogen-vacancy centers created by scanning focused helium ion beam and annealing