A5003319157- Photonic and Optical Devices
- Gold and Silver Nanoparticles Synthesis and Applications
- Plasmonic and Surface Plasmon Research
- Quantum Dots Synthesis And Properties
- Quantum Information and Cryptography
- Orbital Angular Momentum in Optics
- Magneto-Optical Properties and Applications
- Nonlinear Optical Materials Studies
- Microfluidic and Capillary Electrophoresis Applications
- Quantum optics and atomic interactions
- Quantum and electron transport phenomena
- Semiconductor Quantum Structures and Devices
- Advanced Fiber Laser Technologies
- Luminescence and Fluorescent Materials
- Microfluidic and Bio-sensing Technologies
University of Victoria
2021-2023
Quantum networking and computing technologies demand scalable hardware with high-speed control for large systems of quantum devices. Solid-state platforms have emerged as promising candidates, offering fabrication a wide range qubits. Architectures based on spin-photon interfaces allow highly-connected networks over photonic links, enabling entanglement distribution distributed protocols. With the potential to address these demands, optically-active spin defects in silicon are one proposed...
Single-photon sources are required for quantum technologies and can be created from individual atoms atom-like defects. Erbium ions produce single photons at low-loss fiber optic wavelengths, but they have low emission rates, making them challenging to isolate reliably. Here, we tune the size of gold double nanoholes (DNHs) enhance erbium emitters, achieving 50× enhancement over rectangular apertures previously demonstrated. This produces enough show nanocrystals wavelengths not seen in our...
Nanohole optical tweezers have been used by several groups to trap and analyze proteins. In this work, we demonstrate that it is possible create high-performance double nanohole (DNH) substrates for trapping proteins without the need any top-down approaches (such as electron microscopy or focused-ion beam milling). Using polarization analysis, identify DNHs well determine their orientation then use them trapping. We are also able other hole configurations, such single, trimers clusters....
Gap plasmon structures could enable future ultrafast communication by allowing simultaneous nanoscale integration of electromagnetic waves, nonlinear and optical-electrical conversion, providing a critical element often overlooked in this context: electrical contacts. Here, the fundamental limit these is discussed, it argued that conventional concept “smaller better" for higher confinement not true when loss considered, but few nanometer gaps will be required to give best performance....
Scalable methods to access single-photon sources on demand are highly sought after. As a potential strategy, we demonstrate the optical trapping and chemical anchoring of NaYF4 nanoparticles (NPs) NPs doped with average single Er3+ ion. The method present involves surface coating thiol-functionalized phospholipids, where thiol group is protected photoremovable at 340 nm 2-bromo-4′-hydroxyacetophenone. Functionalized trapped optically in gold double-nanohole aperture using 980 laser. A light...
Here we use optical trapping to isolate single Yb/Er-doped upconversion nanocrystals in plasmonic double nanohole apertures and show that the geometry of aperture can be tuned give high emission rate en- hancement. The additional enhancement over rectangular were previously demonstrated by our group, producing enough observe at 400 nm 1550 with 980 excitation—not seen group's previous work apertures. A facile method for tuning adjusting plasma etching time colloidal lithography fabrication...
Quantum technologies require sources of single photons, which can be created by isolating individual atoms or ions. Erbium ions are a promising choice for photon as it emits photons at low-loss fiber optic wavelengths. However, erbium has low emission rate and is challenging to isolate emitters reliably. Here, we singly Er<sup>3+</sup>-doped nanocrystals using optical tweezers in gold double nanohole aperture. The geometry enhances the from nanocrystals. With this additional enhancement...
Here we demonstrate second harmonic generation in two-dimensional hexagonal boron nitride (hBN) using plasmonic nanorods with 10 mW continuous source pump at 973 nm. Gold resonance 980 nm are used to enhance the electric field intensity near hBN nanoflakes, which showed <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$6.5 \times 10^{5}$</tex> times enhancement finite-difference time-domain simulations. A drop-coated mixture of nanoflakes and...