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HL: Fachverband Halbleiterphysik

HL 27: Quantum Dots and Wires: Optics II

HL 27.7: Talk

Wednesday, March 20, 2024, 11:15–11:30, EW 202

Progress in Telecom C Band Single Photons from Semiconductor Quantum Dots — •Daniel Vajner1, Paweł Holewa2,3, Emilia Zieba-Ostój2, Maja Wasiluk2, Martin van Helversen1, Lucas Rickert1, Aurimas Sakanas4, Alexander Huck3, Kresten Yvind3, Niels Gregersen3, Anna Musiał2, Paweł Mrowinski2, Marcin Syperek2, Elizaveta Semenova1,3, and Tobias Heindel11Institute of Solid State Physics, Technical University of Berlin, 10623 Berlin, Germany — 2Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland — 3Technical University of Denmark, Kongens Lyngby 2800, Denmark — 4Quantum Foundry Copenhagen

We report progress towards high quality semiconductor quantum dot single photons at Telecom C-band wavelengths. This includes recent work demonstrating the coherent on-demand generation of indistinguishable photons from single QD devices consisting of InAs/InP QD-mesa structures heterogeneously integrated with a metallic reflector on a silicon wafer [1]. Furthermore, we show new experimental results which extend the employed two-photon-resonant excitation by using chirped excitation laser pulses as well as by adding a stimulation laser pulse resonant with the biexciton.

[1] Vajner, Daniel A., et al. arXiv preprint arXiv:2306.08668 (2023).

Keywords: Quantum Dots; Single Photons; Telecom C-Band; Quantum Communication; Quantum Technologies

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