| Autor: |
Pekerten, Barış, Brandão, David, Elfeky, Bassel Heiba, Zhou, Tong, Han, Jong E., Shabani, Javad, Žutić, Igor |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Phys. Rev. B 110, L060513 (2024) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevB.110.L060513 |
| Popis: |
Planar Josephson junctions provide a platform to host topological superconductivity which, through manipulating Majorana bound states (MBS), could enable fault-tolerant quantum computing. However, what constitutes experimental signatures of topological superconductivity and how MBS can be detected remains strongly debated. In addition to spurious effects that mimic MBS, there is a challenge to discern the inherent topological signals in realistic systems with many topologically-trivial Andreev bound states, determining the transport properties of Josephson junctions. Guided by the advances in microwave spectroscopy, we theoretically study Al/InAs-based planar Josephson junction embedded into a radio-frequency superconducting quantum interference device to identify microwave signatures of topological superconductivity. Remarkably, by exploring the closing and reopening of a topological gap, we show that even in a wide planar Josephson junction with many Andreev bound states, such a topological signature is distinguishable in the resonance frequency shift of a microwave drive and the ``half-slope'' feature of the microwave absorption spectrum. Our findings provide an important step towards experimental detection of non-Abelian statistics and implementing scalable topological quantum computing. |
| Databáze: |
arXiv |
| Externí odkaz: |
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