Bulletin of the American Physical Society
2024 APS March Meeting
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W46: Silicon Qubits IV - Characterization and Modeling
3:00 PM–5:48 PM,
Thursday, March 7, 2024
Room: 200AB
Sponsoring
Unit:
DQI
Chair: Felix Beaudoin, Nanoacademic Technologies inc
Abstract: W46.00005 : Tunnel and capacitive coupling optimization in FDSOI spin-qubit devices*
3:48 PM–4:00 PM
Presenter:
Grégoire Roussely
(CEA Grenoble)
Authors:
Valentin Labracherie
(CEA-Leti)
Grégoire Roussely
(CEA Grenoble)
Heimanu Niebojewski
(CEA Grenoble)
Hamza Sahin
(CEA Grenoble)
Biel Martinez Diaz
(CEA Grenoble)
Jing Li
(CEA Grenoble)
Victor Millory
(CEA Grenoble)
Bruna Cardoso-Paz
(Quobly)
Tristan Meunier
(Institut Néel; Quobly)
Maud Vinet
(Quobly)
Silvano De Franceschi
(CEA Grenoble)
Romain Maurand
(CEA Grenoble)
Boris Brun-Barriere
(CEA Grenoble)
Yann-Michel Niquet
(CEA Grenoble)
Benoit Bertrand
(CEA Grenoble)
Here we present the ongoing development to improve the sturdiness of individual spin qubits within a scalable design. We aim to suppress the diagonal coupling in pseudo-2D array structures compared with the longitudinal and transverse couplings for a proper device operability. To this end, we introduced new QDs array designs and developed dedicated gate/active module accordingly. Higher yield was achieved through process optimization of the two-level intertwined gates structures. Finally, low temperature characterization of the proposed structures show wide tunability of the tunnel coupling.
*This work has been supported by the European Union’s Horizon 2020 research and innovation programme under grant agreements No 951852 (QLSI) and No 810504 (QuCube).
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