Automated tuning of inter-dot tunnel coupling in double quantum dots

C. J. Van Diepen, P. T. Eendebak, B. T. Buijtendorp, U. Mukhopadhyay, T. Fujita, C. Reichl, W. Wegscheider, L. M.K. Vandersypen

Research output: Contribution to journalArticleScientificpeer-review

25 Citations (Scopus)
29 Downloads (Pure)

Abstract

Semiconductor quantum dot arrays defined electrostatically in a 2D electron gas provide a scalable platform for quantum information processing and quantum simulations. For the operation of quantum dot arrays, appropriate voltages need to be applied to the gate electrodes that define the quantum dot potential landscape. Tuning the gate voltages has proven to be a time-consuming task, because of initial electrostatic disorder and capacitive cross-talk effects. Here, we report on the automated tuning of the inter-dot tunnel coupling in gate-defined semiconductor double quantum dots. The automation of the tuning of the inter-dot tunnel coupling is the next step forward in scalable and efficient control of larger quantum dot arrays. This work greatly reduces the effort of tuning semiconductor quantum dots for quantum information processing and quantum simulation.

Original languageEnglish
Article number033101
Number of pages8
JournalApplied Physics Letters
Volume113
Issue number3
DOIs
Publication statusPublished - 2018

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