Speaker: Dr. Mary Jacquiline Romero

Reader and Westpac Research Fellow, School of Mathematics and Physics, University of Queensland, Australia
Chief Investigator, Australian Research Council Centre of Excellence for Engineered Quantum Systems (EQUS) 

Title:  Finding Knowledge: Adventures Using the Shape of Light

Abstract:
The transverse shape of light has emerged in recent years as a promising platform for encoding quantum information, for the multiple levels that it affords and the ease with which shape can be controlled. To demonstrate, I will discuss high-dimensional quantum state tomography.  
We used a tomographic technique inspired by machine learning to track a quantum state as the state changes. The method is computationally efficient and also robust—it converges to a good estimate even in the presence of strong noise.   Developing techniques like this is especially important for systems that are of high dimensionality, where making tomographically complete measurements become impractical.

Related publications:
https://journals.aps.org/pra/abstract/10.1103/PhysRevA.84.062101
https://www.nature.com/articles/35085529 

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