Erlangen 2022 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 41: Nano-Optics
Q 41.9: Poster
Mittwoch, 16. März 2022, 16:30–18:30, P
Coupling of quantum emitters in 2D materials to laser-written waveguides — •Josefine Krause1, Simone Piacentini2, Roberto Osellame2, Falk Eilenberger1, Giacomo Corrielli2, and Tobias Vogl1 — 1Institute of Applied Physics, Friedrich-Schiller-University Jena, Germany — 2Istituto di Fotonica e Nanotecnologie, Consiglio Nazionale delle Ricerche (IFN-CNR) and Dipartimento di Fisica, Politecnico di Milano, Italy
Optical quantum technologies have the potential to revolutionize future information processing and sensing. For practical applications, it is essential to combine the required components to manipulate light as well as the photon source itself within compact optical chips. A possible route is combining room temperature solid-state emitters with ultrafast laser-written waveguides. Quantum emitters hosted by atomically thin 2D materials can be easily attached to the optical circuits. Moreover, the photon extraction is near-ideal, as the emitters are not surrounded by any high refractive index material.
In this work, we transfer 2D material-based emitters to the entry facet of a laser-written waveguide. We use the fluorescence of the free exciton in monolayer WS2 as a benchmark to demonstrate the coupling between 2D emitters and the waveguide. The excellent optical properties of the free exciton are preseved after the transfer. The waveguide features an on-chip directional coupler that allows us to measure the photon statistics. We are currently extending our platform to single photon emitters in hexagonal boron nitride and actively-tunable Mach-Zehnder interferometers for quantum state manipulation.