Poster (After Call)

FZJ-2025-00495

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png From an empty lab to customized setups and germanium quantum dots

Visser, L. (Corresponding author)FZJ* ; Focke, N. (Corresponding author)FZJ* ; Anupam, S.FZJ* ; Mourik, V.FZJ* ; Reichmann, F. ; Mistroni, A. ; Yamamoto, Y. ; Capellini, G. ; Zoellner, M. H.

2024

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Please use a persistent id in citations: doi:10.34734/FZJ-2025-00495

Abstract: Planar germanium quantum wells are a promising material in scaling up spin qubits in gate-defined quantum dots [1,2]. In our newly founded junior group, we want to investigate the material’s unique properties to understand the effects of spin-orbit coupling and heterostructure engineering on spin qubit operation [3].We will present the steps we took to prepare for spin qubit measurements in our lab by developing fitting measurement electronics and infrastructure, such as custom magnetic shielding in an ADR. Further, we will give an update on our progress towards creating spin qubit devices. In a close feedback loop, we optimize wafers grown by IHP GmbH for their transport properties with hallbars and quantum dot devices fabricated at the Helmholtz Nano Facility [4].[1] Scappucci, G., et al., Nat Rev Mater 6, 926–943 (2021)[2] Hendrickx, N. W., et al., Nature volume 591, pages 580–585 (2021)[3] Bulaev, D. V., Loss, D., PRL 98, 097202 (2007)[4] Albrecht, W., et al., Journal of large-scale research facilities JLSRF 3, A112 (2017)

Keyword(s): Others (1st) ; Condensed Matter Physics (2nd)

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Contributing Institute(s):

1. JARA Institut Quanteninformation (PGI-11)

Research Program(s):

1. 5221 - Advanced Solid-State Qubits and Qubit Systems (POF4-522) (POF4-522)

Appears in the scientific report 2024

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Database coverage:

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