Session Overview |
Wednesday, May 29 |
10:40 |
Probing High-Temperature Annealing Effects on Diamond Optical Microcavities
* Natalia do Carmo Carvalho, University of Calgary, Canada Vinaya K. Kavatamane, University of Calgary, Canada Ahmas El-Hamamsy, University of Calgary, Canada Joseph E. Losby, University of Calgary, Canada Paul Barclay, University of Calgary, Canada A critical step in the fabrication of solid-state qubits involves subjecting the host material to elevated temperatures, a process known as annealing. In the case of diamond, annealing not only facilitates the creation of color centers, but also determines their subsequent optical and spin properties. However, its effect on diamond optical cavities is not clearly understood. Here, we show that high-temperature high-vacuum annealing creates a surface layer on diamond microdisk devices that adversely affects their optical quality factors. We observed that this layer can be removed with an acid surface treatment that restores the optical properties of the microdisk resonators. |
11:05 |
Yittrium iron garnet photonic crystals for cavity magnomechanics
* John Davis, University of Alberta, Dept of Physics, Canada Ali Rashedi, University of Alberta, Dept of Physics We demonstrate here the first photonic crystal fabricated from the magnetic material yttrium iron garnet (YIG). YIG is an exciting material for quantum technologies, but to date experiments have been restricted to mm-scale spheres. Nanofabricating structures from YIG will enable new capabilities, for example co-localizing magnons with phonons or optical photons enables the potential for quantum wavelength transduction. |
11:30 |
Multimode Entangled Squeezed Light Generation and Propagation in a Coupled-Cavity Photonic Crystal
* Dylan van Eeden, Queen's University, Canada Marc Dignam, Queen's University, Canada We design a photonic crystal coupled-cavity system consisting of a three-mode cavity and three waveguides to generate and deliver entangled two-mode squeezed states of light on-chip. |
11:45 |
Porous Shell Optical Resonators for Photocatalysis
* Xin Jin, Istituto Italiano di Tecnologia, Italy Vincenzo Aglieri, Istituto Italiano di Tecnologia Marzia Ferrera, Istituto Italiano di Tecnologia Andrea Toma, Istituto Italiano di Tecnologia Luca Razzari, INRS-EMT We introduce a design of porous titanium dioxide shells that synergistically operate as resonant cavities, enhancing the generation of hot electrons in plasmonic nanoparticles, as well as improving their hot carrier transfer rate for photocatalysis. |