Princeton Quantum Colloquium: Applications and limits of parametric driving in superconducting circuits, Michael Hatridge (Yale University)

Date
Feb 10, 2025, 12:30 pm1:30 pm
Location

Details

Event Description

Title: Applications and limits of parametric driving in superconducting circuits

Abstract: Parametric driving has long been used in very low quality factor, 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, and are increasingly used for a variety of gates and other controls in superconducting quantum information processors.  In this talk, I’ll review the basics of quantum information processing and superconducting circuits, what I mean by parametric controls, and how their use shapes how we couple qubits together and trying to explain and predict hard we can drive our circuits before they break.  I’ll show recent results on matching theory and experiment on transmon qubits driven with high fidelity ‘subharmonic’ parametric single qubit gates, and discuss the prospects for extending this work to more complicated couplers and gates.

A light lunch will be served in the Bowen Atrium at noon.

Sponsor
Andrew Houck