title: Hybrid Group IV Nanophotonic Structures Incorporating Diamond Silicon-Vacancy Color Centers.
abstract: We demonstrate a new approach for engineering group IV semiconductor-based quantum photonic structures containing negatively charged silicon-vacancy (SiV(-)) color centers in diamond as quantum emitters. Hybrid diamond-SiC structures are realized by combining the growth of nano- and microdiamonds on silicon carbide (3C or 4H polytype) substrates, with the subsequent use of these diamond crystals as a hard mask for pattern transfer. SiV(-) color centers are incorporated in diamond during its synthesis from molecular diamond seeds (diamondoids), with no need for ion-implantation or annealing. We show that the same growth technique can be used to grow a diamond layer controllably doped with SiV(-) on top of a high purity bulk diamond, in which we subsequently fabricate nanopillar arrays containing high quality SiV(-) centers. Scanning confocal photoluminescence measurements reveal optically active SiV(-) lines both at room temperature and low temperature (5 K) from all fabricated structures, and, in particular, very narrow line widths and small inhomogeneous broadening of SiV(-) lines from all-diamond nanopillar arrays, which is a critical requirement for quantum computation. At low temperatures (5 K) we observe in these structures the signature typical of SiV(-) centers in bulk diamond, consistent with a double lambda. These results indicate that high quality color centers can be incorporated into nanophotonic structures synthetically with properties equivalent to those in bulk diamond, thereby opening opportunities for applications in classical and quantum information processing.
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Jingyuan Linda
authors.initials: JL
authors.lastname: Zhang
authors.affiliation: Geballe Laboratory for Advanced Materials, Stanford University , Stanford, California 94305, United States.|Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States.
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Ishiwata
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Babinec
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Marina
authors.initials: M
authors.lastname: Radulaski
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Kai
authors.initials: K
authors.lastname: Müller
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Konstantinos G
authors.initials: KG
authors.lastname: Lagoudakis
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Constantin
authors.initials: C
authors.lastname: Dory
authors.affiliation: Geballe Laboratory for Advanced Materials, Stanford University , Stanford, California 94305, United States.
authors.forename: Jeremy
authors.initials: J
authors.lastname: Dahl
authors.affiliation: Geballe Laboratory for Advanced Materials, Stanford University , Stanford, California 94305, United States.
authors.forename: Robert
authors.initials: R
authors.lastname: Edgington
authors.affiliation: Laboratoire des Multimateriaux et Interfaces, Université de Lyon , 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France.
authors.forename: Veronique
authors.initials: V
authors.lastname: Soulière
authors.affiliation: Laboratoire des Multimateriaux et Interfaces, Université de Lyon , 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Ferro
authors.affiliation: Institute of Organic Chemistry, Justus-Liebig University , Heinrich-Buff-Ring 17, 35392 Giessen, Germany.
authors.forename: Andrey A
authors.initials: AA
authors.lastname: Fokin
authors.affiliation: Institute of Organic Chemistry, Justus-Liebig University , Heinrich-Buff-Ring 17, 35392 Giessen, Germany.
authors.forename: Peter R
authors.initials: PR
authors.lastname: Schreiner
authors.affiliation: Geballe Laboratory for Advanced Materials, Stanford University , Stanford, California 94305, United States.|Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States.
authors.forename: Zhi-Xun
authors.initials: ZX
authors.lastname: Shen
authors.affiliation: Geballe Laboratory for Advanced Materials, Stanford University , Stanford, California 94305, United States.|Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, United States.
authors.forename: Nicholas A
authors.initials: NA
authors.lastname: Melosh
authors.affiliation: E. L. Ginzton Laboratory, Stanford University , Stanford, California 94305, United States.
authors.forename: Jelena
authors.initials: J
authors.lastname: Vučković
keywords: Diamond; nanodiamonds; nanofabrication; nanophotonics; silicon carbide; silicon-vacancy (SiV) color center in diamond