IFIMAC+ICMM Joint Seminar Series focuses on cutting-edge research on condensed matter physics, bringing European speakers to our Cantoblanco Campus, this year via Zoom. You need to be subscribed to our mailing list at the link provided below to get the links to the seminar room. https://listas-correo.uam.es/sympa/subscribe/seminarios-ifimac-icmm-l.
Andreev bound states: detection and the road towards quantum technologies
Attila Geresdi, Chalmers University
Andreev bound states are the basis of the microscopic picture of the Josephson effect, describing the coupling of two superconductors via a weak link by the formation of localized, single quasiparticle states decoupled from the continuum above the superconducting gap. With the recent improvement of superconductor-semiconductor nanoscale hybrid devices, the readout and manipulation of quasiparticles occupying the Andreev levels became experimentally feasible.
In this talk, I will discuss the experimental settings for the measurement of individual Andreev levels in this system. Then, I will provide an overview of the quantum manipulation of the quasiparticle charge and spin, and finally showcase our ongoing efforts towards scalable quantum technologies with Andreev levels.