Northwestern Events Calendar

Jan
13
2023

Special Talk: Michael Hatridge: Parametric controls and modular quantum computing in superconducting quantum circuits

When: Friday, January 13, 2023
3:00 PM - 4:00 PM CT

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

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

Contact: Joan West   (847) 491-3645

Group: Physics and Astronomy Special Events and Invited Talks

Category: Academic

Description:

Parametric driving has long been used in weakly nonlinear superconducting circuits to create nearly quantum-limited ‘parametric’ amplifiers, which are in wide use for the readout of superconducting qubits.  However, the off-resonant terms we can activate with parametric driving are ubiquitous in Josephson-junction based circuits.  In this talk, I’ll review the basics of how we identify and engineer parametric controls in the laboratory and use them in a variety of applications including qubit bath engineering and single- and multi-qubit gates.  I will focus on how we are using parametric controls based on the third order nonlinearity of SNAILs to create all-to-all couplings among transmon qubits in small quantum modules, as well as construct quantum state routers to link these modules into large-scale quantum machines. 

Michael Hatridge is an Associate Professor of Physics at the University of Pittsburgh. He received his B.S. from Texas A&M University and Ph. D. from U.C. Berkeley under the
supervision of John Clarke. His work focuses on the use of parametric drives to generate quantum controls, including single- and multi-qubit gates and engineered baths.  His
lab uses parametric controls to realize superconducting quantum circuits, including quantum-limited parametric amplifiers and modular quantum computers.  He is a recipient of the Michelson postdoctoral fellowship, the NSF Career Award, the Sloan Research Fellowship, and the University of Pittsburgh’s Chancellor’s Distinguished Research Award.  

Host: Jens Koch

 

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