On-chip integration of single solid-state quantum emitters with a SiO2 photonic platform

• Published in: New journal of physics 2019-04, Vol.21 (4), p.045007
• Main Authors: Böhm, Florian, Nikolay, Niko, Pyrlik, Christoph, Schlegel, Jan, Thies, Andreas, Wicht, Andreas, Tränkle, Günther, Benson, Oliver
• Format: Article
• Language: English
• Subjects: Atomic force microscopes; Atomic force microscopy; Converters; Coupling; Dipoles; Emitters; Fluorescence; nanodiamond; nitrogen-vacancy center; Numerical analysis; on-chip integration; Photonics; Photons; Physics; Qubits (quantum computing); Robustness (mathematics); Silicon dioxide; Silicon substrates; sinlge photon source; Solid state; waveguide
• ISSN: 1367-2630
• DOI: 10.1088/1367-2630/ab1144

One important building block for future integrated nanophotonic devices is the scalable on-chip interfacing of single photon emitters and quantum memories with single optical modes. Here we present the deterministic integration of a single solid-state qubit, the nitrogen-vacancy (NV) center, with a photonic platform consisting exclusively of SiO2 grown thermally on a Si substrate. The platform stands out by its ultra-low fluorescence and the ability to produce various passive structures such as high-Q microresonators and mode-size converters. By numerical analysis an optimal structure for the efficient coupling of a dipole emitter to the guided mode could be determined. Experimentally, the integration of a preselected NV emitter was performed with an atomic force microscope and the on-chip excitation of the quantum emitter as well as the coupling of single photons to the guided mode of the integrated structure could be demonstrated. Our approach shows the potential of this platform as a robust nanoscale interface of on-chip photonic structures with solid-state qubits.