Linearly polarized single photons in the telecom ‘O’ band from a quantum dot in an elliptical bullseye resonator

Semiconductor quantum dots can generate single indistinguishable photons at telecom wavelengths for quantum networking applications. Integrating quantum dots into polarized microcavities is highly beneficial for advanced functionalities. In this work, we couple a quantum dot emitting in the telecom 'O' band to an elliptical bullseye resonator, demonstrating broadband polarization-selective enhancement and linearly polarized single-photon emission.