Optoelectronics of color centers in diamond and silicon carbide | Dr. Igor Khramtsov

Theoretical Seminar at The Department of Physics & Engineering, ITMO | 16 Jun 2021 Timecodes are below the abstract. Dr. Igor Khramtsov, Moscow Institute of Physics and Technology Title: "Optoelectronics of color centers in diamond and silicon carbide" Abstract: In spite of the significant progress in the development of quantum technologies in the past decade, the lack of bright and efficient true single-photon sources that can operate outside of a research laboratory impedes the implementation of many practical quantum information devices. Today, сolor centers in diamond, silicon carbide, and related semiconductors are considered to be the most promising candidates for the role of single-photon sources capable of operating at room temperature. However, their electrical pumping, strictly required from a practical point of view, was poorly studied. In this talk, I will present new theoretical approaches, models, methods, and newly discovered effects that allow not only to explain and predict experimental results but also to design ultra-bright single-photon sources for quantum applications. Main paper/arXiv, related to the seminar, and other references https://journals.aps.org/prapplied/ab... https://www.nature.com/articles/s4153... https://journals.aps.org/prapplied/ab... https://link.springer.com/article/10...." 0:00:00 Intro 0:00:47 Start of the talk 0:01:06 Outline 0:01:34 Introduction. Why do we need single-photon sources? 0:03:50 Color centers in diamond 0:04:40 Optical vs. electrical pumping 0:05:22 Electroluminescence of color centers 0:07:31 Second-order autocorrelation function 0:08:32 Models of photo- and electroluminescence 0:10:43 Second-order autocorrelation function derivation and calculation 0:22:42 Bright electroluminescence of single-photon sources 0:28:01 Superinjection effect in double heterostructures 0:29:32 Superinjection effect in p-i-n diamond diodes 0:31:42 Silicon-vacancy-center single-photon electroluminescence 0:35:01 Superinjection effect in p-i-n diamond diodes 0:39:26 Bright single-photon sources based on AlN/diamond heterostructure 0:42:47 Summary 0:44:49 Discussion The Department of Physics and Engineering of ITMO University (Saint Petersburg, Russia) hosts online weekly seminars to discuss recent scientific achievements of researchers from all over the world with a wide audience. The topics include experimental (Optical seminar) and theoretical (Theoretical seminar) aspects of nanophotonics, solid-state physics, material science, as well as design and applications of radiofrequency structures and devices (Microwave seminar). Upcoming and past events can be found at https://physics.itmo.ru/en/seminars   / physics.itmo     / physics_itmo     / physics.itmo   #TheoreticalSeminar #ITMO #новыйфизтех #scientificseminar