Telecom-wavelength quantum dots for photonic quantum technologies

Simone L. Portalupi; Cornelius Nawrath; Raphael Joos; Sascha Kolatschek; Stephanie Bauer; Florian Hornung; Ponraj Vijayan; Robert Sittig; Michael Jetter; Peter Michler

doi:10.1117/12.2675840

26 July 2023 Telecom-wavelength quantum dots for photonic quantum technologies

Simone L. Portalupi, Cornelius Nawrath, Raphael Joos, Sascha Kolatschek, Stephanie Bauer, Florian Hornung, Ponraj Vijayan, Robert Sittig, Michael Jetter, Peter Michler

Author Affiliations +

Proceedings Volume PC12633, Photonics for Quantum 2023; PC126330Q (2023) https://doi.org/10.1117/12.2675840
Event: Photonics for Quantum, 2023, Rochester, New York, United States

Abstract

We will discuss how to realize QDs based on the well-developed GaAs-platform capable of emitting in the telecom O- and C-bands [1]. Advanced nanofabrication techniques for the realization of optical resonators utilized to greatly enhance the source brightness will be discussed [2,3]. In(Ga)As QDs operating in the telecom C-band and integrated into circular Bragg grating cavities will be shown. The Purcell-enhanced sources reached a fibre-coupled single-photon count rate of 13.9 MHz (excitation rep. rate: 228 MHz, first-lens collection efficiency ~17%), with a multi-photon contribution as low as g(2)(0) = 0.0052. Operation at elevated temperature will be demonstrated [4]. [1] S. L. Portalupi, et al. Sci. Technol. 34, 053001 (2019). [2] M. Sartison, et al., Appl. Phys. Lett. 113, 032103 (2018). [3] S. Kolatschek, et al., Nano Lett. 21, 7740 (2021). [4] C. Nawrath et al., arXiv:2207.12898 (2022).

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Simone L. Portalupi, Cornelius Nawrath, Raphael Joos, Sascha Kolatschek, Stephanie Bauer, Florian Hornung, Ponraj Vijayan, Robert Sittig, Michael Jetter, and Peter Michler "Telecom-wavelength quantum dots for photonic quantum technologies", Proc. SPIE PC12633, Photonics for Quantum 2023, PC126330Q (26 July 2023); https://doi.org/10.1117/12.2675840

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KEYWORDS

Quantum technologies

Quantum dots

Photons

Quantum light

Quantum light generation

Quantum experiments

Quantum science

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