Bulletin of the American Physical Society
APS March Meeting 2021
Volume 66, Number 1
Monday–Friday, March 15–19, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session X29: Calibration and Gates in Spin Qubit Arrays
8:00 AM–10:48 AM,
Friday, March 19, 2021
Sponsoring
Unit:
DQI
Chair: Aaron Weinstein, HRL Laboratories, LLC
Abstract: X29.00002 : Tunnel coupling measurement of Si quantum dots based on charge sensing*
8:36 AM–8:48 AM
Live
Presenter:
Xinyu Zhao
(State Univ of NY - Buffalo)
Authors:
Xinyu Zhao
(State Univ of NY - Buffalo)
Xuedong Hu
(State Univ of NY - Buffalo)
We develop a fitting procedure based on a 4-level model, which allows not only measurement of the ground state tunnel splitting, but also that for excited valley states. When applied to measurements on a Si/SiGe triple-dot sample, we observe an average of 46% difference in the fitting results compared to the previous 2-level model. We analyze the fitting performance and robustness of both models in various conditions and identify situations when the 4-level theory is required to obtain accurate results.
*We acknowledge financial support by US ARO via grant W911NF1710257
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2025 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700