Highly efficient and indistinguishable single-photon sources via phonon-decoupled two-color excitation

• URL: http://arxiv.org/abs/2209.07770v2
• Date: Tue, 16 May 2023 08:12:44 GMT
• Title: Highly efficient and indistinguishable single-photon sources via phonon-decoupled two-color excitation
• Authors: Luca Vannucci, Niels Gregersen
• Abstract summary: coherent two-color pumping allows for population inversion arbitrarily close to unity in bulk quantum dots. We calculate very high photon emission into the cavity mode (0.95 photons per pulse) together with excellent indistinguishability (0.975) in a realistic configuration.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Single-photon sources with near-unity efficiency and indistinguishability play a major role in the development of quantum technologies. However, on-demand excitation of the emitter imposes substantial limitations to the source performance. Here, we show that coherent two-color pumping allows for population inversion arbitrarily close to unity in bulk quantum dots thanks to a decoupling effect between the emitter and its phonon bath. Driving a micropillar single-photon source with this scheme, we calculate very high photon emission into the cavity mode (0.95 photons per pulse) together with excellent indistinguishability (0.975) in a realistic configuration, thereby removing the limitations imposed by the excitation scheme on single-photon source engineering.

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