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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.09463 |
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| _version_ | 1866913021698244608 |
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| author | Jamotte, Maxime Menei, Tom Kumar, Manohar Zyuzin, Alexander Schmidt, Thomas L. |
| author_facet | Jamotte, Maxime Menei, Tom Kumar, Manohar Zyuzin, Alexander Schmidt, Thomas L. |
| contents | We study time-domain electron interferometry in a Hong-Ou-Mandel (HOM) geometry, where a thin superconductor between two quantum Hall systems acts as the beam splitter. By comparing the measurable current cross correlations at the interferometer outputs with those of a normal-conducting electronic HOM setup, we show that Andreev processes strongly affect the HOM dip. Using a combination of scattering theory and numerical tight-binding simulations for a graphene quantum Hall bar, we show that the change of charge cross correlations can be used to experimentally detect and characterize local and crossed Andreev processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_09463 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Detecting crossed Andreev reflection in a quantum Hall interferometer with a superconducting beam splitter Jamotte, Maxime Menei, Tom Kumar, Manohar Zyuzin, Alexander Schmidt, Thomas L. Mesoscale and Nanoscale Physics We study time-domain electron interferometry in a Hong-Ou-Mandel (HOM) geometry, where a thin superconductor between two quantum Hall systems acts as the beam splitter. By comparing the measurable current cross correlations at the interferometer outputs with those of a normal-conducting electronic HOM setup, we show that Andreev processes strongly affect the HOM dip. Using a combination of scattering theory and numerical tight-binding simulations for a graphene quantum Hall bar, we show that the change of charge cross correlations can be used to experimentally detect and characterize local and crossed Andreev processes. |
| title | Detecting crossed Andreev reflection in a quantum Hall interferometer with a superconducting beam splitter |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2604.09463 |