
ECE Colloquium: Marina Radulaski (UC Davis)
Quantum simulation guided development of nanophotonic quantum hardware
Recent developments in quantum nanophotonics pertaining to applications in quantum light generation and quantum memories have reinvigorated interest in physics of the Tavis-Cummings (TC) model. Here, a lossy resonator interacts with multiple quantum emitters in resonant and off-resonant systems. Traditionally, numerical simulations of the TC model in an open quantum setting have been limited to small dimensions due to unfavorable scaling with the number of emitters. We explore how quantum computers can help bridge this knowledge gap and propose and benchmark approaches for digital and analog quantum simulation of the TC model on superconducting and trapped ion systems offered by DOE testbeds. These results help develop color center photonic hardware, which we pursue experimentally.
Experimentally, we integrate near infrared color centers in silicon carbide (SiC) with photonic devices for applications in quantum light sources, quantum repeaters and all-photonic quantum simulators at scale. Our angle-etching method produces close-to-uniform triangular cross-section devices across a 5-inch SiC wafer while maintaining the spectral properties of color centers. Next, we utilize nanopillars to enhance collection from the NV center in 4H-SiC and expand on the optical cryogenic characterization of this promising emitter with near-telecom emission and proposed spin-photon entangling processes.
Bio:
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 Ph.D. 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.