Keynote: Sven Rogge
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Building quantum matter atom by atom
This talk focuses on single dopant atom placement in the context of engineered matter for quantum simulation and computation. Silicon offers an interesting platform for engineered quantum matter because when isotopically purified it acts as a “semiconductor vacuum” for spins. After a general introduction of quantum simulation and computation a first step towards engineered Hamiltonians for Fermionic systems in the form of atomic chains will be presented. Here strongly interacting dopants were employed to simulate a two-site Hubbard Hamiltonian at low effective temperatures with single-site resolution which allows the quantification of the
entanglement entropy and Hubbard interaction strengths. To scale this approach to larger systems complex in-situ multi-electrode devices have been fabricated by a scanning probe hydrogen depassivation and decoration technique and spatially resolved gated single-electron spectroscopy maps obtained in ultra-high vacuum will be presented. Such quantum-state images of two-donor devices led to a donor based two qubit gate design that is robust in regard to variability in dopant placement. In addition to the work on donors I will also present work on single defects in silicon with a spin-orbit interaction for electrical manipulation and coupling.
This includes coherence times for holes bound to boron in isotopically enriched silicon rivalling the best results for donors and quantum dots.
Keynote: Virginia Kilborn
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Probing galaxy formation and evolution with next generation radio telescope surveys
We are currently undergoing a revolution in galaxy evolution studies through new instruments and technologies allowing us to map more galaxies, in multiple wavelengths. This allows for deep studies of the evolution of galaxies over time, which when comparing with galaxy evolution modelling is enabling the picture of galaxy evolution to emerge.
In particular, neutral atomic hydrogen (HI) is an excellent tracer of interactions and physical processes occurring in galaxies, enabling us to observe first-hand events such as gas-stripping, tidal interactions, and hydro-dynamical processes that are acting on the gas. When combined with other indicators such as star formation rate, this can elucidate how galaxies are transformed in different environments. Next generation telescopes
such as the Australian SKA Pathfinder [1] will provide thousands of resolved maps of the HI distribution galaxies in the local universe. I will outline the state of the art research in this area, and how next generation telescopes will help us to untangle the physical processes acting on galaxies in the local universe.
[1] https://www.csiro.au/en/Research/Facilities/ATNF/ASKAP
Lunch
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DEGAP Group Lunch
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Location: 80.03.14
Lunch for AIP Group: Diversity and Equity Group in Australian Physics
Conference Dinner
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ZINC Restaurant, Federation Square, Melbourne