Publikation: Quartet Tomography in Multiterminal Josephson Junctions
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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.
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OHNMACHT, David, Marco CORAIOLA, Juan José GARCIA ESTEBAN, Deividas SABONIS, Fabrizio NICHELE, Wolfgang BELZIG, Juan Carlos CUEVAS, 2023. Quartet Tomography in Multiterminal Josephson JunctionsBibTex
@unpublished{Ohnmacht2023-11-30Quart-69192, year={2023}, title={Quartet Tomography in Multiterminal Josephson Junctions}, author={Ohnmacht, David and Coraiola, Marco and Garcia Esteban, Juan José and Sabonis, Deividas and Nichele, Fabrizio and Belzig, Wolfgang and Cuevas, Juan Carlos} }
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