Generation of correlated photon pairs by a five-level quantum dot in a microcavity

Abstract: The processes of entangled state generation in the course of cascade emission of photons in a semiconductor single-electron quantum dot are described. It is shown that, depending on the choice of the initial state of the quantum dot, there are two algorithms that make it possible to obtain photons with polarization or spatiotemporal correlation in the terahertz frequency range. For this purpose, the system is exposed to a combination of laser and quasi-static (Stark) fields, and external (dissipative) optical modes are used.

Keywords: nanophotonics, lasers, microresonators, quantum dots, photon source, entanglement.