SKM 2023 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 33: Poster II

HL 33.31: Poster

Mittwoch, 29. März 2023, 17:00–19:00, P1

Integration of free-standing GaAs nanobeam cavities hosting InAs/GaAs QD with LNOI waveguides — •Oscar Camacho Ibarra, Ioannis Caltzidis, Marc Sartison, and Klaus D. Jöns — Paderborn University, Paderborn, Germany

Monolithic integration is the most straightforward approach to incorporate single photon emitters and photonic integrated circuits (PICs). However, this approach limits you to the optical properties of the chosen material platform. Furthermore, the current best emitters on monolithic integration are randomly positioned [1]. Based on this context, hybrid integration, despite also requiring localization, stands out, in this approach different materials are integrated into one PIC, allowing one to exploit the advantages of each different material system (whether they are optical properties of the material or the emitters properties). In our work, we seek to hybridly integrate InAs/GaAs quantum dots embedded in nanobeam cavities with LNOI waveguides. To achieve this, we chose a transfer printing method [2] to place the nanobeam cavities (hosting the emitters) on top of the LNOI waveguides. Therefore, we report on the current progress and challenges for localization and nanofabrication of the free-standing nanobeam cavities.

[1] Marc Sartison et al, Scalable integration of quantum emitters into photonic integrated circuits, Mater. Quantum. Technol. 2 023002, 2022.

[2] Ryota Katsumi et al, Transfer-printed single-photon sources coupled to wire waveguides, Optica Vol. 5, No. 6, 2022.