A5036333102- Diamond and Carbon-based Materials Research
- Advanced Fiber Laser Technologies
- Mechanical and Optical Resonators
- Photonic and Optical Devices
- Advanced Surface Polishing Techniques
- Force Microscopy Techniques and Applications
- Renewable energy and sustainable power systems
University of Technology Sydney
2018-2021
Single crystal diamond membranes that host optically active emitters are highly attractive components for integrated quantum nanophotonics. In this work we demonstrate bottom-up synthesis of single containing germanium vacancy (GeV) color centers. We employ a lift-off technique to generate the and perform chemical vapor deposition in presence source realize situ doping. Finally, show these suitable engineering photonic resonators such as microdisk cavities with quality factors ∼1500. The...
Group IV color centers in diamond (Si, Ge, Sn, and Pb) have recently emerged as promising candidates for realization of scalable quantum photonics. However, their synthesis nanoscale is still its infancy. In this work we demonstrate controlled selected group defects (Ge Sn) into nanodiamonds single crystal membranes by microwave plasma chemical vapor deposition. We take advantage inorganic salts to prepare the precursors that contain required ions are then incorporated growing diamond....
Abstract Diamond is a material of choice in the pursuit integrated quantum photonic technologies. So far, majority devices fabricated from diamond are made (100)‐oriented crystals. In this work, we demonstrate methodology for fabrication optically active membranes (111)‐oriented diamond. We use liftoff technique to generate membranes, followed by chemical vapor deposition presence silicon homogenous vacancy color centers with emission properties that superior those further fabricate...
Color centers in diamond have garnered significant attention for applications integrated quantum photonics.The availability of thin (∼ hundred nanometers) membranes is paramount to achieve this goal.In paper, we describe detail a robust, reproducible and cost effective fabrication method that enables engineering high quality with uniform distribution germanium vacancies employing microwave plasma chemical vapor deposition.We use combination different precursors homogeneous doping the...
Schematic illustration of a 1D diamond nanobeam cavity.
Abstract Diamond resonators containing color‐centers are highly sought after for application in quantum technologies. Bottom‐up approaches promising the generation of single‐crystal diamond structures with purposely introduced color centers. Here possibility using a polycrystalline to grow by employing pattern growth method is demonstrated. For, possible mechanism growing structure predefined shape and size from substrate controlling condition clarified. Then, introducing germanium...
Single crystal diamond membranes that host optically active emitters are highly attractive components for integrated quantum nanophotonics. In this work we demonstrate bottom-up synthesis of single containing the germanium vacancy (GeV) color centers. We employ a lift-off technique to generate and perform chemical vapour deposition in presence oxide realize insitu doping. Finally, show these suitable engineering photonic resonators such as microring cavities with quality factors 1500. The...
Diamond is a material of choice in the pursuit integrated quantum photonic technologies. So far, majority devices fabricated from diamond, are made (100)-oriented crystals. In this work, we demonstrate methodology for fabrication optically-active membranes (111)-oriented diamond. We use liftoff technique to generate membranes, followed by chemical vapour deposition diamond presence silicon homogenous vacancy colour centers with emission properties that superior those further fabricate high...
Advancement of diamond based photonic circuitry requires robust fabrication protocols key components, including resonators and cavities. Here, we present 1D (nanobeam) crystal cavities generated from single membranes utilising a metallic tungsten layer as restraining, conductive removable hard mask. The use instead more conventional silicon oxide enables good repeatability reliability the procedures. process yields high quality with factors (Q factors) approaching 10$^$4. Finally, show that...