Hybrid optical fiber for light-induced superconductivityстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 7 июля 2020 г.
Аннотация:We exploit the recent proposals for the light-induced superconductivity mediated by a Bose-Einsteincondensate of exciton-polaritons to design a superconducting fber that would enable long-distancetransport of a supercurrent at elevated temperatures. The proposed fber consists of a conventionalcore made of a silica glass with the frst cladding layer formed by a material sustaining dipole-polarisedexcitons with a binding energy exceeding 25meV. To be specifc, we consider a perovskite cladding layerof 20nm width. The second cladding layer is made of a conventional superconductor such as aluminium.The fber is covered by a conventional coating bufer and by a plastic outer jacket. We argue that thecritical temperature for a superconducting phase transition in the second cladding layer may be stronglyenhanced due to the coupling of the superconductor to a bosonic condensate of exciton-polaritonsoptically induced by the evanescent part of the guiding mode confned in the core. The guided lightmode would penetrate to the frst cladding layer and provide the strong exciton-photon couplingregime. We run simulations that confrm the validity of the proposed concept. The fabrication ofsuperconducting fbers where a high-temperature superconductivity could be controlled by light wouldenable passing superconducting currents over extremely long distances.