Hybrid optical fiber for light-induced superconductivity

Area of Science:

• Condensed Matter Physics
• Materials Science
• Optoelectronics

Background:

• Superconductivity enables lossless current transport but typically requires extremely low temperatures.
• Exciton-polaritons are quasiparticles formed from the coupling of excitons and photons, capable of forming Bose-Einstein condensates.
• Light-induced superconductivity offers a pathway to control superconducting properties with optical means.

Purpose of the Study:

• To design a novel superconducting fiber capable of long-distance supercurrent transport at elevated temperatures.
• To leverage light-induced superconductivity mediated by exciton-polariton Bose-Einstein condensates for enhanced critical temperatures.
• To propose a practical fiber structure integrating optical and superconducting functionalities.

Main Methods:

• Conceptual design of a multi-layered fiber structure with a silica core, perovskite exciton layer, and aluminum superconducting layer.
• Theoretical analysis of the coupling between guided light modes, exciton-polaritons, and the conventional superconductor.
• Computational simulations to validate the proposed concept and assess the potential for enhanced superconducting critical temperatures.

Main Results:

• The proposed fiber design utilizes an evanescently coupled light mode to induce a Bose-Einstein condensate of exciton-polaritons.
• Strong coupling between the superconductor and the exciton-polariton condensate is predicted to enhance the superconducting critical temperature.
• Simulations confirm the feasibility of the concept for light-controlled high-temperature superconductivity.

Conclusions:

• The designed superconducting fiber offers a promising route for achieving high-temperature superconductivity controllable by light.
• This technology could enable efficient, long-distance transmission of supercurrents, overcoming current temperature limitations.
• Further research and fabrication efforts are warranted to realize this advanced superconducting material.