Deterministic and robust entanglement of nitrogen-vacancy centers using low- Q photonic-crystal cavities

作者：Wolters Janik^*; Kabuss Julia; Knorr Andreas; Benson Oliver

来源：Physical Review A, 2014, 89(6): 060303.

DOI：10.1103/PhysRevA.89.060303

We propose an experiment to generate deterministic entanglement between separate nitrogen-vacancy (NV) centers mediated by the mode of a photonic crystal cavity. Using numerical simulations, the applicability and robustness of the entanglement operation to parameter regimes achievable with the present technology are investigated. We find that even with moderate cavity Q factors of 10(4) a concurrence of c %26gt; 0.6 can be achieved within a time of t(max) approximate to 150 ns, while Q factors of 10(5) promise c %26gt; 0.8. Most importantly, the investigated scheme is relatively insensitive to spectral diffusion and differences between the optical transition frequencies of the used NV centers.

• 出版日期2014-6-19