Lecture Series Archive

Quantum Nanophotonics Hardware with Integrated Color Centers

Marina Radulaski

Dr. Marina Radulaski
Assistant Professor
ECE, UC Davis, CA

Thu, 11/18/2021

Color centers in wide band gap materials have been prominently studied for applications as quantum bits, quantum light sources, quantum sensors, and spin-photon interfaces. Silicon carbide, in particular, has been an attractive host of color centers due their NIR single photon emission, long spin-coherence times, nonlinear optical properties, and commercial substrate availability. Integration of color centers with nanophotonic devices has been a challenging task, but significant progress has been made with demonstrations up to 120-fold resonant emission enhancement of emitters embedded in photonic crystal cavities. In this talk, I will discuss new geometries for silicon carbide quantum device integration, including waveguides, photonic crystal cavities, and photonic crystal molecules which can be applied in quantum light generation, quantum repeaters, integrated quantum circuits, and quantum simulation. Using the parameters of the state-of-the-art color center-cavity systems, we explore the light and matter interaction using open quantum system modeling [6]. By carefully including the inhomogeneous broadening in emitter frequencies into the Tavis-Cummings-Hubbard model, we explore multi-emitter interactions in coupled cavity arrays evaluating cavity-protection, localization and superfluid phase transition effects. In addition to simulations on classical computers, we turn to NISQ quantum computers for new opportunities in open quantum system modeling.

Marina Radulaski is an Assistant Professor of Electrical and Computer Engineering at the University of California, Davis leading the Quantum Nanophotonics Laboratory. Her academic training includes a Ph.D. in applied physics and a postdoctoral training in electrical engineering at Stanford University, as well as two undergraduate degrees in physics and computer science at the University of Belgrade and Union University in Serbia. Prof. Radulaski has broad international experience in quantum and solid-state physics research performed at Stanford University, ETH Zurich, Lawrence Berkeley National Lab, Hewlett-Packard Labs, Oxford University, the Institute for Quantum Optics and Quantum Information in Vienna, Helmholtz Center Berlin, the Institute of Physics of the Polish Academy of Science, and the Institute of Physics Belgrade. She is a recipient of the NSF CAREER Award 2021, was selected among the Rising Stars in EECS in 2017, and named 30-Under-30 Up and Coming Physicists by the Scientific American in 2012.

Amateur Radio

Dennis Derickson

Dr. Dennis Derickson
EE Department, California Polytechnic State University, San Luis Obispo, CA

Thu, 11/04/2021

Great Impedance Match for Knowledge Transfer:
Amateur Radio as part of Electrical and Computer Engineering Education

Abstract - The amateur radio community is well known for its creativity and ingenuity in their projects constructed with a modest budget and basic laboratory equipment. The Electrical and Computer Engineering (ECE) community is known for its innovation and world-changing impact. When these two communities meet in the world of electrical and computer engineering education, great outcomes await for faculty and students. This presentation talks about how a university makes these connections to help student success. A starting point is to encourage students to take the Federal Communications Commission (FCC) amateur radio examination early on in their college education in order to get exposure to advanced topics in ECE well in advance of when they take courses on the topic. A second initiative is to encourage student creativity to design and implement their own projects, using amateur radio, in formal and informal laboratory settings of the University curriculum. Finally, amateur radio provides a rich set of topics for senior and graduate level project/thesis activity. This presentation will provide examples of how these amateur radio/ECE interactions occur along with specific project examples that demonstrate that amateur radio is still on the forefront of project innovation.

Dennis Derickson, Amateur Radio call sign AC0P, received his BS, MS, and Ph.D. in electrical engineering from South Dakota State University (1981), the University of Wisconsin in Madison (1982) and the University of California in Santa Barbara (1992). His farming background and youth ham radio hobby heavily influenced his career in engineering. He worked on spectrum and network analyzer measurement equipment at Hewlett Packard (HP) in Santa Rosa, CA in the 1980’s. His Ph.D research focused on high-speed optoelectronics. He joined the Electrical Engineering faculty at Cal Poly in 2005 and was department chair from 2010-2020. He is a founding member of the start-up company Insight Photonics Solutions that is commercializing research initiated at Cal Poly. His outreach activities include summer science camps and robotics programs for local schools.

Powering Inaccessible Circuits and Communicating with them through Coupled Inductors

Asad Abidi

Dr. Asad Abidi
Electrical and Computer Engineering, UCLA, CA

Thu, 10/21/2021

Abstract - The world today is full of unpowered electronic circuits that rely on contactless methods of receiving power and communicating with an external terminal. The most common example is “Tap cards” at points of sale, to pay fares on public transport, and so on. RF tags are increasingly entering warehouses, hospitals, and other inventory collections. Unlike optically scanned barcodes, electronic circuits today contain non-volatile memory and therefore information unique to each tag.

Most of these applications exploit weakly coupled coils to transmit power and data. How this works is not as obvious as it might seem.

I will show the circuit theoretic principles of these near-field links, and a rediscovery of Tesla’s oscillation transformer that leads to self-regulated power delivery through an inductive link that is, within limits, independent of coupling coefficient.

Speaker Bio - Asad Abidi received the BSc degree in Electrical Engineering from Imperial College, London in 1976, and the PhD from the University of California, Berkeley in 1982. He worked at Bell Laboratories, Murray Hill until 1985, and then joined the faculty of the University of California, Los Angeles where he is Distinguished Chancellor’s Professor of Electrical Engineering. With his students he has developed many of the radio circuits and architectures that enable today’s mobile devices.

Among other awards, Professor Abidi has received the 2008 IEEE Donald O. Pederson Award in Solid-State Circuits and the 2012 Best Paper Award from the IEEE Journal of Solid-State Circuits. The University of California, Berkeley’s Department of EECS recognized him as a Distinguished Alumnus in 2015. He was elected Fellow of IEEE in 1996, Member of the US National Academy of Engineering, and Fellow of TWAS, the world academy of sciences.

A Quantum Computing Industry Overview – challenges and opportunities on the road ahead

Liz Ruetsch

Ms. Liz Ruetsch
General Manager of Quantum Engineering Solutions Business
Keysight Technologies, Santa Rosa, CA

Thu, 10/07/2021

Abstract: The field of quantum computing is moving at a rapid pace, and the year 2021 was no exception. In this talk, I will cover an overview of various quantum computer technology implementations, a view of the global market makers of quantum computers, how these machines may be accessed from the cloud, and how Keysight is helping to enable these industry players as well as the overall quantum ecosystem.

Bio: Liz is currently the General Manager of our Quantum Engineering Solutions (QES) team at Keysight Technologies. She is leading a team focused on the Quantum Computing, Quantum Sensing, and Quantum Communications markets. She has been responsible for integrating two acquisitions into the quantum team: Labber (in 2020), and Quantum Benchmark (2021).

Liz has worked in a wide variety of Keysight business units including our EEsof EDA Software Division based in Santa Rosa, CA; Oscilloscope and Protocol Division based in Colorado Springs, CO; China Communications Operation based in Beijing, China; Microwave and Communications Division, and in our Field Sales Organization based in Andover, MA.

Liz holds a BSEE from Rutgers University (1994), and an MBA from the Boston University Executive MBA Program (2006). Her work has been recognized with both internal and external awards including the Agilent CEO Innovation Award (2009), SWE Global Leadership Award (2017), and North Bay Women in Business Award (2019). Liz is also active in many volunteer efforts – most recently serving as the executive sponsor for the mentoring program for Women in Quantum.

The Future of Fiber Optics to the Home

Ed Boyd

Mr. Ed Boyd
Vice President Engineering & CTO, Co-Founder

Thu, 09/16/2021

Abstract – Like electricity and water, internet access has become a critical utility for the home or office. Distance learning and working from home during the COVID-19 Pandemic highlighted the challenges with the current technologies. Rural and urban locations need to get higher bandwidth, lower latency, and more reliable internet access. Copper access technologies are reaching their limits and the cell phone network doesn’t provide enough bandwidth for home and business applications. The world has embraced fiber optics and specifically Passive Optical Networks (PON) for the future of internet access. The technology used for past, current, and future internet access will be explored with a detailed look at the latest PON fiber technologies.

Mr. Edward Boyd is the Chief Technical Officer and Co-Founder of Tibit Communications. Tibit Communications is a Northern California startup company developing Pluggable Network Interface solutions including the world’s first Micro-OLT in an SFP form factor. Before Tibit, Ed was the CTO and Co-Founder of Teknovus, Inc before it was acquired by Broadcom in March of 2010. Mr Boyd was Senior Technical Director for Broadcom Corporation working on the Ethernet Passive Optical Network (EPON) and Ethernet Protocol over Cable (EPoC) products before leaving to become a Co-Founder of Tibit. Mr. Boyd has more than 20 years of experience defining and developing ASICs for data communications, cable access networks, and telecom access networks. Mr. Boyd holds numerous patents in areas of cable modem, PON, and Ethernet networks. Mr. Boyd has been active in CableLabs, ITU-T (BPON/GPON), and IEEE 802.3 (Ethernet/EPON /EPoC) standards bodies.