2016/08/18 by Alp Sipahigil, Ruffin E. Evans, Denis D. Sukachev +13 · 1 citation
Physics and Astronomy · #quant-ph #cond-mat.mes-hall #physics.optics
paper · pdf · doi:10.1126/science.aah6875
published as Science, 354, 847-850 (2016) · 15 pages and 5 figures. Supplementary Material, 36 pages and 10 figures, available as an ancillary file
arxiv created 2016/08/18 · arxiv updated 2017/03/21
Efficient interfaces between photons and quantum emitters form the basis for quantum networks and enable nonlinear optical devices operating at the single-photon level. We demonstrate an integrated platform for scalable quantum nanophotonics based on silicon-vacancy (SiV) color centers coupled to nanoscale diamond devices. By placing SiV centers inside diamond photonic crystal cavities, we realize a quantum-optical switch controlled by a single color center. We control the switch using SiV metastable orbital states and verify optical switching at the single-photon level by using photon correlation measurements. We use Raman transitions to realize a single-photon source with a tunable frequency and bandwidth in a diamond waveguide. Finally, we create entanglement between two SiV centers by detecting indistinguishable Raman photons emitted into a single waveguide. Entanglement is verified using a novel superradiant feature observed in photon correlation measurements, paving the way for the realization of quantum networks.