تقرير
A tunable Fabry-P\'erot quantum Hall interferometer in graphene
| العنوان: | A tunable Fabry-P\'erot quantum Hall interferometer in graphene |
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| المؤلفون: | Déprez, Corentin, Veyrat, Louis, Vignaud, Hadrien, Nayak, Goutham, Watanabe, Kenji, Taniguchi, Takashi, Gay, Frédéric, Sellier, Hermann, Sacépé, Benjamin |
| المصدر: | Nature Nanotechnology (2021) |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | Electron interferometry with quantum Hall edge channels holds promise for probing and harnessing exotic exchange statistics of non-Abelian anyons. In semiconductor heterostructures, however, quantum Hall interferometry has proven challenging and often obscured by charging effects. Here we show that high-mobility monolayer graphene equipped with a series of gate-tunable quantum point contacts that act as electron beam-splitters provides a model system to perform Fabry-P\'{e}rot quantum Hall interferometry. We observe high-visibility Aharonov-Bohm interference free of charging effects and widely tunable through electrostatic gating or magnetic field, in remarkable agreement with theory. A coherence length of $\mathbf{10 \,\mu m}$ at a temperature of $0.02$ K allows us to further achieve coherently-coupled double Fabry-P\'{e}rot interferometry. Our results open a new avenue for quantum Hall interferometry and the exploitation of topological excitations for quantum computation. Comment: Revised main text |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1038/s41565-021-00847-x |
| URL الوصول: | http://arxiv.org/abs/2008.11222 |
| رقم الأكسشن: | edsarx.2008.11222 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1038/s41565-021-00847-x |
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