Abstract: Josephson junction-based microwave parametric amplifiers are ubiquitous in quantum computing research based on superconducting circuits. However, they still leave a lot to be desired when it comes to scaling up to the massive channel counts that many in the field are proposing. In this talk, I'll discuss an effort in our group to produce a new generation of parametric amplifiers that integrate quantum-limited noise performance with nonreciprocal signal routing. Our approach leverages recent developments in coupled mode theory that help understand and synthesize novel behaviors in complex parametrically coupled systems. I'll briefly show the basic building blocks of this approach and show how to turn this into a novel device called the "field-programmable Josephson amplifier (FPJA)."
*You will need to bring your cell phone, so you can sign in. For Zoom, please submit a chat saying hello, so you can receive lunch. Lunch will be served after the seminar only to the individuals that have attended.*
At 4pm, there will be a tea in ATL 2117 for our speaker and students - this is a chance for students to ask questions directly to our speaker. Refreshments will be served.