Northwestern Events Calendar

Oct
28
2021

CMP Seminar: Joe Aumentado: Next-generation quantum-limited amplifiers for superconducting quantum computing

When: Thursday, October 28, 2021
4:00 PM - 5:00 PM Central

Where: Technological Institute, F160, 2145 Sheridan Road, Evanston, IL 60208 map it

Audience: Faculty/Staff - Student - Post Docs/Docs - Graduate Students

Contact: Samantha Westlake  

Group: Physics and Astronomy Condensed Matter Physics Seminars

Category: Academic

Description:

Abstract: Josephson parametric amplifiers have played an critical role in making superconducting quantum computing seem remotely viable. However, for many physicists involved in this work, these amplifiers can seem like a pragmatic (but necessary) afterthought. In this talk, I'll motivate why it's necessary to continue to develop these devices, explain the basics of parametric coupling, and how we've applied multimode linear coupled mode theory to create a new generation of parametric amplifiers. These amplifiers demonstrate complex important properties, including directionality (nonreciprocity), phase-sensitive gain, and nearly quantum-limited noise performance.

Speaker: Dr. Joe Aumentado, Advanced Microwave Photonics Group, NIST Boulder

Host: Venkat Chandrasekhar

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