Abstract
A key requirement for implementing photonic quantum information networks is the mutual two-photon interference between photons emitted by spatially separated quantum light sources. In order to up-scale such networks, the deterministic fabrication of efficient sources of single and indistinguishable photons is of crucial importance. So far, few experiments reported on two-photon interference (TPI) from spatially separated QD-based single photon sources, which is required for entanglement swapping, and deterministic sources have been applied only recently [1]. However, narrowband enhancement of photon extraction in high-Q microcavities hinders their application for advanced quantum communication schemes based on polarization entangled photon pairs from the biexciton-exciton radiative cascade.
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