Prospect of entangled photon-pair generation based on superconductivity

Abstract

Superconductivity and optoelectronics have developed almost independently up to now, and the interdisciplinary fields are still immature. One of the reasons can be attributed to the differences in their basis technologies. Here we introduce a new phenomenon where photon emission processes are dramatically enhanced by introducing superconductivity into a semiconductor optical device theoretically and experimentally. We discuss the fundamental operation of superconducting light emitting diodes and demonstrate that Cooper-pair-based radiative recombination enhances the photon generation processes. The possibility of generating quantum entangled photon pairs and the future prospect are discussed.