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arXiv · 2512.15842

Time-resolved Charge Detection in Transition Metal Dichalcogenide Quantum Dots

Markus Niese·Michele Masseroni·Clara Scherm·Christoph Adam·Max J. Ruckriegel·Artem O. Denisov·Jonas D. Gerber·Lara Ostertag·Jessica Richter·Kenji Watanabe·Takashi Taniguchi·Thomas Ihn·Klaus Ensslin
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Abstract

We investigate electronic transport through gate-defined quantum dots in molybdenum disulfide MoS$_2$ using an integrated charge detector. We observe a crossover from two weakly coupled single dots to a strongly coupled double quantum dot. In the regime of extremely weak dot-lead coupling, where the direct transport current is below the detection limit, we measure the dot occupation via charge detection and access the few-electron regime. Due to the large band gap of MoS$_2$, tunneling rates can be sufficiently suppressed to resolve individual tunneling events. These results establish a platform for single-shot spin- and valley-to-charge conversion and highlight the potential of transition-metal dichalcogenide quantum dots for quantum information applications.

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Markus Niese, Michele Masseroni, Clara Scherm, Christoph Adam, Max J. Ruckriegel, Artem O. Denisov, Jonas D. Gerber, Lara Ostertag, Jessica Richter, Kenji Watanabe, Takashi Taniguchi, Thomas Ihn, Klaus Ensslin. 2025-12-17. Time-resolved Charge Detection in Transition Metal Dichalcogenide Quantum Dots. https://doi.org/10.1021/acs.nanolett.5c06351

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