학술논문
A new FDSOI spin qubit platform with 40nm effective control pitch
Document Type
Conference
Author
Bedecarrats, T.; Paz, B. Cardoso; Diaz, B. Martinez; Niebojewski, H.; Bertrand, B.; Rambal, N.; Comboroure, C.; Sarrazin, A.; Boulard, F.; Guyez, E.; Hartmann, J.-M.; Morand, Y.; Magalhaes-Lucas, A.; Nowak, E.; Catapano, E.; Casse, M.; Urdampilleta, M.; Niquet, Y.-M.; Gaillard, F.; De Franceschi, S.; Meunier, T.; Vinet, M.
Source
2021 IEEE International Electron Devices Meeting (IEDM) Electron Devices Meeting (IEDM), 2021 IEEE International. :1-4 Dec, 2021
Subject
Language
ISSN
2156-017X
Abstract
Operating Si quantum dot (QD) arrays requires homogeneous and ultra-dense structures with aggressive gate pitch. Such a density is necessary to separately control the QDs chemical potential (i.e. charge occupation of each QD) from the exchange interaction (i.e. tunnel barriers between each QD). We present here a novel Si quantum device integration that halves the effective gate pitch and provides full controllability in 1D FDSOI QD arrays. The major advantages of this architecture are explored through numerical simulations. Functionality of the fabricated structure is validated via 300K statistical electrical characterization, while tunnel-coupling control is demonstrated at cryogenic temperature.