Quantum dot spins and single-photon emitters for scalable quantum technologies

#biomedical-imaging #cryptography #quantum-computing #quantum-dot #machine-learning
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Quantum technologies harness the unique properties of quantum mechanics to realize new functionalities and superior performance in computing, communication, and sensing, which are simply impossible using classical mechanics. As such, quantum technologies impact a wide range of applications, including biomedical imaging, drug development, artificial intelligence, energy grid optimization, energy materials development, cybersecurity and cryptography, financial modelling, logistics optimization, and weather forecasting, to name just a few. Such a wide range of applications was highlighted in recent reports which projected that the global quantum computing sector alone will be worth nearly $1.3 trillion by 2035 (McKinsey) and that Canada’s quantum technology sector will have a value of $139 billion by 2045 (NRC).
In this seminar, I will present an overview of my research into the development of scalable photonic quantum technologies. Firstly, I will present my work that led to the demonstration of spin qubit initialization in single InAs/GaAs self-assembled quantum dots with high fidelity, on picosecond timescales, and without the need for applied magnetic fields. Then, I will present my work on the localization of single-photon emitters in 2D hexagonal boron nitride towards the development of atomically-thin quantum light-emitting diodes (QLEDs) operating at room temperature. Next, I will describe my research on machine learning-assisted optical measurements of quantum-dot single-photon emitters with high precision and high throughput towards the development of scalable photonic quantum technologies. Finally, I will discuss my research on nitrogen vacancy (NV) colour centers in nanodiamond and their optical coupling to plasmonic nanocavities for the realization of bright single-photon emitters and thus the development of a wide range of photonic quantum technologies.



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Jonathan of Totonto Metropilitan University

Quantum technologies harness the unique properties of quantum mechanics to realize new functionalities and superior performance in computing, communication, and sensing, which are simply impossible using classical mechanics. As such, quantum technologies impact a wide range of applications, including biomedical imaging, drug development, artificial intelligence, energy grid optimization, energy materials development, cybersecurity and cryptography, financial modelling, logistics optimization, and weather forecasting, to name just a few. Such a wide range of applications was highlighted in recent reports which projected that the global quantum computing sector alone will be worth nearly $1.3 trillion by 2035 (McKinsey) and that Canada’s quantum technology sector will have a value of $139 billion by 2045 (NRC).
In this seminar, I will present an overview of my research into the development of scalable photonic quantum technologies. Firstly, I will present my work that led to the demonstration of spin qubit initialization in single InAs/GaAs self-assembled quantum dots with high fidelity, on picosecond timescales, and without the need for applied magnetic fields. Then, I will present my work on the localization of single-photon emitters in 2D hexagonal boron nitride towards the development of atomically-thin quantum light-emitting diodes (QLEDs) operating at room temperature. Next, I will describe my research on machine learning-assisted optical measurements of quantum-dot single-photon emitters with high precision and high throughput towards the development of scalable photonic quantum technologies. Finally, I will discuss my research on nitrogen vacancy (NV) colour centers in nanodiamond and their optical coupling to plasmonic nanocavities for the realization of bright single-photon emitters and thus the development of a wide range of photonic quantum technologies.

Biography:

Dr. Jonathan D. Mar is an Assistant Professor in the Department of Electrical, Computer, and Biomedical Engineering at Toronto Metropolitan University, where he serves as Director of the Quantum Photonics Laboratory (QPL). Prior to this, he was an Assistant Professor in Physics at Newcastle University and Associate Director of the Joint Quantum Centre (JQC) Durham-Newcastle, following positions as Research Scientist at the Hitachi Cambridge Laboratory and Research Fellow at St. Edmund’s College, Cambridge University. Awarded a full scholarship by the Cambridge Commonwealth Trust, he obtained a PhD in physics from Cambridge University under the supervision of Professor Jeremy J. Baumberg FRS and Dr. David A. Williams, following a BASc in electrical engineering from the University of Toronto.
Dr. Mar’s research interests are in the optical characterization of solid-state quantum emitters and their optical coupling to photonic devices for the realization of photonic quantum technologies. As Principal Investigator or Co-Investigator, his research program has been supported by research grants totalling more than $2.07M from funding bodies such as the Engineering and Physical Sciences Research Council, Royal Society, Sir Henry Royce Institute, and UKRI Research England. His research program has also established strong collaborations with academic, industrial, and government partners, including Cambridge University, Oxford University, Imperial College London, Mind Foundry Ltd., and the EPSRC National Epitaxy Facility. Dr. Mar has twice been the recipient of an Inventor’s Award from Hitachi Europe Ltd. for his contributions to patents and intellectual property, and was awarded with Fellowship in the Higher Education Academy (FHEA) for his teaching excellence in UK higher education.

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Address:245 church St., , Toronto, Ontario, Canada, M5B 2R2