Date and Time: Friday, June 12, 2020 at 1300 AEST
Speaker: Ian Petersen, The Australian National University
Title: A Systems Theory Approach to the Synthesis of Minimum Noise Non-Reciprocal and Phase-Insensitive Quantum Amplifiers
Abstract: We present a systems theory approach to finding the minimum required level of added quantum noise in phase-insensitive and non-reciprocal quantum amplifiers. We also present a synthesis procedure for constructing quantum optical phase-insensitive and non-reciprocal quantum amplifiers which adds the minimum level of quantum noise and achieves a required gain and bandwidth. This synthesis procedure is based on a singularly perturbed quantum system involving the broadband approximation of a Bogoliubov transformation. In the case of a phase-insensitive amplifier it requires two squeezers and two beamsplitters. In the case of a non-reciprocal and phase-insensitive quantum amplifier it requires three squeezers and six beamsplitters.
Biography: Ian R. Petersen was born in Victoria, Australia. He received a Ph.D in Electrical Engineering in 1984 from the University of Rochester. From 1983 to 1985 he was a Postdoctoral Fellow at the Australian National University. From 1985 until 2016 he was with UNSW Canberra where he was most recently a Scientia Professor and an Australian Research Council Laureate Fellow in the School of Engineering and Information Technology. He has previously been ARC Executive Director for Mathematics Information and Communications, Acting Deputy Vice-Chancellor Research for UNSW and an Australian Federation Fellow. From 2017 he has been a Professor at the Australian National University. He was the Interim Director of the Research School of Electrical, Energy and Materials Engineering at the Australian National University from 2018-2019. He has served as an Associate Editor for the IEEE Transactions on Automatic Control, Systems and Control Letters, Automatica, IEEE Transactions on Control Systems Technology and SIAM Journal on Control and Optimization. Currently he is an Editor for Automatica. He is a fellow of IFAC, the IEEE and the Australian Academy of Science. His main research interests are in robust control theory, quantum control theory and stochastic control theory.
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