Time-resolved Charge Detection in Transition Metal Dichalcogenide Quantum Dots
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909968391733248 |
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| author | Niese, Markus Masseroni, Michele Scherm, Clara Adam, Christoph Ruckriegel, Max J. Denisov, Artem O. Gerber, Jonas D. Ostertag, Lara Richter, Jessica Watanabe, Kenji Taniguchi, Takashi Ihn, Thomas Ensslin, Klaus |
| author_facet | Niese, Markus Masseroni, Michele Scherm, Clara Adam, Christoph Ruckriegel, Max J. Denisov, Artem O. Gerber, Jonas D. Ostertag, Lara Richter, Jessica Watanabe, Kenji Taniguchi, Takashi Ihn, Thomas Ensslin, Klaus |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_15842 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Time-resolved Charge Detection in Transition Metal Dichalcogenide Quantum Dots Niese, Markus Masseroni, Michele Scherm, Clara Adam, Christoph Ruckriegel, Max J. Denisov, Artem O. Gerber, Jonas D. Ostertag, Lara Richter, Jessica Watanabe, Kenji Taniguchi, Takashi Ihn, Thomas Ensslin, Klaus Mesoscale and Nanoscale Physics 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. |
| title | Time-resolved Charge Detection in Transition Metal Dichalcogenide Quantum Dots |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2512.15842 |