OQE Seminar
Jero Maze
Institute of Physics, Pontificia Universidad Católica de Chile, Santiago, Chile

Wednesday, September 9, 2020
11:00 AM
Via Zoom (link at the bottom of this announcement)



Symmetry and phonon considerations of single emitters for quantum applications


Institute of Physics, Pontificia Universidad Católica de Chile, Santiago, Chile


An active search for new emitters in large bandgap materials has taken place over the last years with the purpose of enabling novel quantum applications. Despite many defects have been found, few of them own the required properties for quantum applications where coherence is the most desired property. In this talk, we will discuss how the inner structure of these systems and the interaction with their immediate environment allow or avoid their use for quantum applications. In particular, we will show how the symmetry of these defects determine their properties and their coupling to the environment, specially phonons, and the consequences of such coupling for enabling applications in quantum information and metrology. As an example, we will focus on the emission spectrum of silicon-vacancy centres in diamond and recently discovered single emitters in hexagonal Boron-Nitride and propose possible defect configurations for them. In addition, we will consider the effect of phonons on the relaxation of spin 1/2 electronic systems subject to Jahn-Teller distortion leading to electronic spin resonance suppression, an expected effect although never estimated. Finally, we will discuss the effect of non-radiative transitions of the nitrogen-vacancy centre in diamond on the polarisation of its electronic spin and nearby nuclear spins. Open questions will be highlighted.


Jero R. Maze is an Associate professor and Director of Research and Postgraduate Studies at the Institute of Physics of Pontificia Universidad Católica de Chile. He is an industrial electrical engineer and earned his PhD in Physics from Harvard University in 2010. Professor Maze researches at the interface between condensed matter and quantum optics. His research includes the study of nano systems where individual degrees of freedom such as the electric or spin charge can be accessed with high level of control to create novel applications in metrology and information storage. His investigation involves both experimental exploration and theoretical studies of nano systems such as trapped molecules in solids and their interaction with the environment with the goal of creating novel sensors for material science and biology, and generating single-molecule based optoelectronics devices.




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