Recent Work
My work in the Silicon-based Quantum Information Lab at Simon Fraser University is focussed on the research of the properties of isotopically engineered silicon (28Si). This material enables optical spectroscopy at ultra high resolutions and opens the door to new research methods for defect characterization.
This poster gives an overview of some of the properties of 28Si and its use in defect characterization and for the measurement and manipulation of phosphorous (P) nuclear spins in Si. The nuclear spin manipulation of P in Si is a promising candidate for the implementation of a Quantum Computer.
PDF version of: Highly Enriched 28Si - the Perfect Semiconductor
Thesis Project
My thesis project focussed on the use of isotopic fingerprints of transition metal impurities in 28Si to to determine the previously unknown composition of long-studied, fundamental defect centres involving copper (Cu), silver (Ag), platinum (Pt) and gold (Au). A recent publication of an Applied Physics Review article in the Journal of Applied Physics 110, 081301 (2011) details this work.
PDF version of: Photoluminescence of deep defects involving transition metals in Si
- new insights from highly enriched 28Si [PDF]
PDF version of: Isotopic Fingerprints of 4 and 5-atom Pt containing PL centers 28Si
Quantum Information Project
In addition to my thesis project I am working on a method to store quantum information in the nuclear spin of P impurities in Si. The storage of quantum information is an important part in the implementation of a quantum computer. Please refer to some of our recent publications for further information:
- “Optoelectronic spin readout of quantum information stored for >180 s in a 28Si ‘semiconductor vacuum’ ” (work in progress (2011))
- Optically detected NMR of optically hyperpolarized 31P neutral donors in 28Si [open access at arXiv.org]