University of Waterloo
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1
Phone: (519) 888-4567 ext 32215
Fax: (519) 746-8115
Department of Electrical and Computer Engineering & Waterloo Institute for Nanotechnology
University of Waterloo
In the area of semiconductors and related applications recent advances have been centered around nanoelectronics, nanophotonics and spintronics (including topological insulators), often in the context of quantum computing and cryptography, as well as on expanding range of sensors and light sources, again firmly grounded in quantum physics and nanotechnology. Fundamental to it all is material physics and engineering. Well controlled manipulation of material structure at atomic level is now essential in achieving the desirable properties of nanodevices, were they to be electronic, photonic or spintronic in nature. Molecular Beam Epitaxy (MBE) is arguably the most powerful tool for such nanoengineering. Even though the technology is used presently for broad range of material systems where sub-monolayer control of layer composition is essential, the III/V semiconductors continue to dominate the field from the mainstream production to the frontiers of quantum computing. In this talk I will attempt to excite the audience with the expanse of physics yet to be tapped into using one the most “classical” III-V material system - (Al, In, Ga)(As, Sb). I will illustrate my case with several examples from the most recent advances in quantum devices based on this material system, such THz Quantum Cascade Lasers with record high operating temperature1,2, quantum interferences in few electron lateral multiple dot systems3,4 as well as ultrafast optical control of qubits in vertical self-assembled double dot systems5 grown with so-called In-flush technique.6 A compact overview of MBE technology and its capabilities will be given in the introduction.
The University of Waterloo acknowledges that much of our work takes place on the traditional territory of the Neutral, Anishinaabeg and Haudenosaunee peoples. Our main campus is situated on the Haldimand Tract, the land granted to the Six Nations that includes six miles on each side of the Grand River. Our active work toward reconciliation takes place across our campuses through research, learning, teaching, and community building, and is centralized within our Indigenous Initiatives Office.