Resonance fluorescence of GaAs quantum dots with near-unity photon indistinguishability

Lukas Hanschke; Eva Schöll; Lucas Schweickert; Katharina D. Zeuner; Marcus Reindl; Saimon Filipe Covre da Silva; Thomas Lettner; Rinaldo Trotta; Jonathan J. Finley; Kai Müller; Armando Rastelli; Valery Zwiller; Klaus D. Jöns

doi:10.1117/12.2568638

20 August 2020 Resonance fluorescence of GaAs quantum dots with near-unity photon indistinguishability

Lukas Hanschke, Eva Schöll, Lucas Schweickert, Katharina D. Zeuner, Marcus Reindl, Saimon Filipe Covre da Silva, Thomas Lettner, Rinaldo Trotta, Jonathan J. Finley, Kai Müller, Armando Rastelli, Valery Zwiller, Klaus D. Jöns

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Proceedings Volume 11471, Quantum Nanophotonic Materials, Devices, and Systems 2020; 1147104 (2020) https://doi.org/10.1117/12.2568638
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

We investigate the indistinguishability of single photons generated from strain-free GaAs/AlGaAs quantum dots using pulsed resonance fluorescence techniques. In pulsed two-photon interference measurements we observe a single photon indistinguishability with a raw visibility of 95%. This can be traced back to the short intrinsic lifetime of excitons and trions confined in the GaAs quantum dots and demonstrates that for this material system the generation of single photons is possible with near-unity indistinguishability even without Purcell enhancement.

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Lukas Hanschke, Eva Schöll, Lucas Schweickert, Katharina D. Zeuner, Marcus Reindl, Saimon Filipe Covre da Silva, Thomas Lettner, Rinaldo Trotta, Jonathan J. Finley, Kai Müller, Armando Rastelli, Valery Zwiller, and Klaus D. Jöns "Resonance fluorescence of GaAs quantum dots with near-unity photon indistinguishability", Proc. SPIE 11471, Quantum Nanophotonic Materials, Devices, and Systems 2020, 1147104 (20 August 2020); https://doi.org/10.1117/12.2568638

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