Nature Communications (Dec 2022)
Atomic fluctuations lifting the energy degeneracy in Si/SiGe quantum dots
- Brian Paquelet Wuetz,
- Merritt P. Losert,
- Sebastian Koelling,
- Lucas E. A. Stehouwer,
- Anne-Marije J. Zwerver,
- Stephan G. J. Philips,
- Mateusz T. Mądzik,
- Xiao Xue,
- Guoji Zheng,
- Mario Lodari,
- Sergey V. Amitonov,
- Nodar Samkharadze,
- Amir Sammak,
- Lieven M. K. Vandersypen,
- Rajib Rahman,
- Susan N. Coppersmith,
- Oussama Moutanabbir,
- Mark Friesen,
- Giordano Scappucci
Affiliations
- Brian Paquelet Wuetz
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Merritt P. Losert
- University of Wisconsin-Madison
- Sebastian Koelling
- Department of Engineering Physics, École Polytechnique de Montréal
- Lucas E. A. Stehouwer
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Anne-Marije J. Zwerver
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Stephan G. J. Philips
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Mateusz T. Mądzik
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Xiao Xue
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Guoji Zheng
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Mario Lodari
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Sergey V. Amitonov
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Nodar Samkharadze
- QuTech and Netherlands Organisation for Applied Scientific Research (TNO)
- Amir Sammak
- QuTech and Netherlands Organisation for Applied Scientific Research (TNO)
- Lieven M. K. Vandersypen
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- Rajib Rahman
- University of New South Wales
- Susan N. Coppersmith
- University of New South Wales
- Oussama Moutanabbir
- Department of Engineering Physics, École Polytechnique de Montréal
- Mark Friesen
- University of Wisconsin-Madison
- Giordano Scappucci
- QuTech and Kavli Institute of Nanoscience, Delft University of Technology
- DOI
- https://doi.org/10.1038/s41467-022-35458-0
- Journal volume & issue
-
Vol. 13,
no. 1
pp. 1 – 8
Abstract
Spin qubits in Si/SiGe quantum dots suffer from variability in the valley splitting which will hinder device scalability. Here, by using 3D atomic characterization, the authors explain this variability by random Si and Ge atomic fluctuations and propose a strategy to statistically enhance the valley splitting
