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HL: Fachverband Halbleiterphysik

HL 27: Quantum Dots and Wires: Optics II

HL 27.7: Vortrag

Mittwoch, 20. März 2024, 11:15–11:30, EW 202

Progress in Telecom C Band Single Photons from Semiconductor Quantum Dots — •Daniel Vajner¹, Paweł Holewa^2,3, 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 Semenova^1,3, and Tobias Heindel¹ — ¹Institute 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