Marina Radulaski (UC Davis): Electrical and Systems Engineering Seminar

Title: “Color center photonics in silicon carbide: scalable fabrication, cryogenic experiments, and quantum simulation on NISQ testbeds”

Marina Radulaski

Associate Professor, University of California, Davis

Marina Radulaski is an Associate Professor of Electrical and Computer Engineering at the University of California, Davis, where she leads the Quantum Nanophotonics Laboratory, and an Affiliate Faculty at the Lawrence Berkeley National Laboratory. She obtained a PhD in applied physics and postdoctoral training in electrical engineering at Stanford University, and holds undergraduate degrees in theoretical physics and computer science from the University of Belgrade and the Union University in Serbia, respectively. Prof. Radulaski is a recipient of the 2023 AFOSR Young Investigator Program Award, 2022 Google Research Scholar Award, and 2021 NSF CAREER Award. She was selected for the cohorts of the 2021 ETH Pauli Center for Theoretical Study Visiting Researcher program, 2017 Rising Stars in EECS, 2017 Stanford Nano- and Quantum Science and Engineering Postdoctoral Fellows, 2012 Stanford Graduate Fellows, and 2012 Scientific American 30-Under-30 Up and Coming Physicists.

Research Synopsis:

Color center systems are among the leading platforms in the development of quantum communication and quantum sensing hardware due to their desirable spin, optical, and spin-photon properties. Among them, the near infrared emitters in silicon carbide, such as the nitrogen-vacancy center in 4H-SiC, provide fiber-friendly operation in an industrially mature substrate, ideal for scalable deployment of quantum networking hardware. By exploring the triangular geometry in quantum-grade SiC, we develop the first wafer-scale fabrication process for color center photonics based on ion beam etching at an angle, realizing a broad range of devices for guiding and resonating light.

Due to their near-identical emission, color centers enable unprecedented studies of multi-emitter-cavity physics, or the Tavis-Cummings (TC) model, with applications in quantum light generation and quantum memories. Here, a lossy resonator interacts with multiple quantum emitters in resonant and off-resonant systems. Modeling of TC systems in an open quantum setting is limited to small dimensions on classical computing resources. We explore how quantum computers can help bridge this knowledge gap and propose algorithms for quantum mapping, analog and digital simulation of the TC model on superconducting and trapped ion DOE testbeds.