Nano- and Quantum Science and Engineering Postdoctoral Fellow, Stanford University
Email
Abstract
Scalable Nanophotonics for Fast Classical and Quantum Information Processing
The classical information processing has been challenged by the so-called end of the Moore’s Law, whereby hardware reaches the limits of scalability. Nanophotonics offers two paradigm-changing approaches to these challenges: 1) all-optical communications and 2) quantum networks. In the first approach, nanophotonic devices promise to simultaneously achieve high bandwidth and low switching powers in classical telecommunications. In the second paradigm, color center systems in silicon carbide and diamond provide long-lived and optically addressable quantum bits (qubits) required for fault-tolerant quantum computing. Moreover, color center systems provide fast non-classical light generation with applications in quantum cryptography and quantum metrology.
My research explores nanoscale quantum optical effects in color center platforms. With a focus on practical applications, I developed a scalable array of optically addressable qubits operating at room temperature in a commercially available silicon carbide wafer. The qubits are based on individual silicon vacancy color centers placed in nanopillars, they have an efficient optical interface and a small physical footprint. Next, I overcame the nanofabrication challenges of processing color center rich diamond by integrating diamond nanoparticles with a silicon carbide CMOS-compatible photonics platform. This approach enabled the realization of new nanophotonic geometries and resulted in a five-fold resonant increase of color center emission signal. Finally, I study quantum phenomena by modeling cavity systems that contain multiple color centers, which is an extension of a model in atomic physics. Thereby, I discovered a new non-classical light generating mechanism called the subradiant photon blockade which promises to provide robust and high-quality generation of single photons with applications in quantum communications.
Bio
Marina Radulaski is a Nano- and Quantum Science and Engineering Postdoctoral Fellow at Stanford University’s Ginzton Lab where she investigates quantum optics and scalable solid-state photonics. Her research goal is to develop new paradigms of communication, computation and sensing by utilizing semiconductor nanofabrication and quantum laws of light-matter interaction. Supported by a Stanford Graduate Fellowship, Marina obtained a PhD in Applied Physics at Stanford University in 2017 where Prof. Jelena Vuckovic advised her graduate thesis on silicon carbide and color center quantum nanophotonics. She was selected among ’30-Under-30 Up And Coming Physicists in 2012′ by the Scientific American and as an honorary speaker at her graduating class commencement.
Prior to coming to Stanford, Marina completed a dual undergraduate training in Serbia with a BSc/MSc in Physics and an award for the best thesis from the University of Belgrade in 2011, and a BSc/MSc in Computer Science from the Union University in 2009. She has vast international research experience in optics and solid-state systems from the Lawrence Berkeley National Lab, Hewlett-Packard Labs, Oxford University, Austrian Academy of Science, Helmholtz Center Berlin, Polish Academy of Science, and the Institute of Physics Belgrade.
In addition to research, Marina is passionate about science outreach and academic organizing. As a co-president of the Stanford Optical Society and an organizer of the annual Stanford University Photonics Retreat she connected optics students across eight science and engineering departments. She increased the level of inclusion in STEM fields by serving as a Stanford Graduate School Diversity Recruiter and a Women in Photonics events planner. She promoted science to 10,000 Bay Area K-12 students as a leader of the Stanford Optical Society Outreach Committee. Lately, Marina has been hosting a Stanford science podcast ‘Goggles Optional’.