Quartet Tomography in Multiterminal Josephson Junctions
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2023
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| _version_ | 1866911249311203328 |
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| author | Ohnmacht, David Christian Coraiola, Marco García-Esteban, Juan José Sabonis, Deividas Nichele, Fabrizio Belzig, Wolfgang Cuevas, Juan Carlos |
| author_facet | Ohnmacht, David Christian Coraiola, Marco García-Esteban, Juan José Sabonis, Deividas Nichele, Fabrizio Belzig, Wolfgang Cuevas, Juan Carlos |
| contents | We investigate the detection of quartets in hybrid multiterminal Josephson junctions. Using simple models of quantum dots coupled to superconducting leads, we find that quartets are ubiquitous and show how to rigorously extract their contribution to the current-phase relation (CPR). We also demonstrate that quartets are closely related to the hybridization of Andreev bound states (ABSs) in these systems and propose a method to identify quartets directly in ABS spectra. We illustrate our method by analyzing the spectroscopic measurements of the ABS spectrum in a three-terminal Josephson junction realized in an InAs/Al heterostructure. Our analysis strongly suggests the existence of quartets in the studied hybrid system. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_18544 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Quartet Tomography in Multiterminal Josephson Junctions Ohnmacht, David Christian Coraiola, Marco García-Esteban, Juan José Sabonis, Deividas Nichele, Fabrizio Belzig, Wolfgang Cuevas, Juan Carlos Superconductivity Mesoscale and Nanoscale Physics We investigate the detection of quartets in hybrid multiterminal Josephson junctions. Using simple models of quantum dots coupled to superconducting leads, we find that quartets are ubiquitous and show how to rigorously extract their contribution to the current-phase relation (CPR). We also demonstrate that quartets are closely related to the hybridization of Andreev bound states (ABSs) in these systems and propose a method to identify quartets directly in ABS spectra. We illustrate our method by analyzing the spectroscopic measurements of the ABS spectrum in a three-terminal Josephson junction realized in an InAs/Al heterostructure. Our analysis strongly suggests the existence of quartets in the studied hybrid system. |
| title | Quartet Tomography in Multiterminal Josephson Junctions |
| topic | Superconductivity Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2311.18544 |