Computer-automated tuning procedures for semiconductor quantum dot arrays
Abstract
As with any quantum computing platform, semiconductor quantum dot devices require sophisticated hardware and controls for operation. The increasing complexity of quantum dot devices necessitates the advancement of automated control software and image recognition techniques for rapidly evaluating charge stability diagrams. We use an image analysis toolbox developed in Python to automate the calibration of virtual gates, a process that previously involved a large amount of user intervention. Moreover, we show that straightforward feedback protocols can be used to simultaneously tune multiple tunnel couplings in a triple quantum dot in a computer automated fashion. Finally, we adopt the use of a “tunnel coupling lever arm” to model the interdot barrier gate response and discuss how it can be used to more rapidly tune interdot tunnel couplings to the gigahertz values that are compatible with exchange gates.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 09, 2019
- Source ID
- 10.1063/1.5121444
Entities
People
- A. M. Mounce
- Adam Mills
- C. Monical
- Jason R Petta
- K. W. Larson
- Mayer M. Feldman
- P. J. Lewis
Organizations
- Army Research Office
- Gordon and Betty Moore Foundation
- Princeton University
- Sandia National Laboratories