/Research
Quantum Computing
Hardware (Photonic)
Stewart Blusson Quantum Matter Institute
NSERC CREATE Undergraduate Research Grant in QC 2023
Co-supervised by Prof. Lukas Chrostowski and Prof. Jeff Young
Main Project (summer 2023)
Qubit entanglement between ring-resonator photon-pair sources on a silicon chip
Inspired by the original paper by Silverstone, Joshua W., et al. (2015), I am working on UBC's first entanglement circuit with integrated on-chip pump filtering
1/3 of the designs have photonic wire bondings (PWBs) at both inputs and outputs, 1/3 with grating couplers (GCs) at inputs and PWBs at outputs, 1/3 with all GCs.
Getting a picosecond pulse laser at 1550 nm is currently a challenge
Passive Silicon Photonics
The fundamental building blocks of photonic quantum computing hardware include passive on-chip elements that are well-studied in the literature.
I designed silicon photonic interferometers and contra-directional couplers using Ansys Lumerical Suite for simulating the propagation mode of light in submicron Si waveguides and extracting key device parameters. The final layout is done in K-Layout for fabrication.
Above are the final layout and the fundamental transverse-electrical and transverse-magnetic modes in Si waveguides from simulation
(Left) Effective index and group index dispersion of the waveguide
(Left) Simulated transmissions spectrum for Mach-Zehnder Interferometer and Michelson Interferometers
Interferometers play a crucial role in quantum photonic processors since they enable the interference and entanglement of photons