Hannover 2020 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 54: Posters: Quantum Optics and Photonics IV

Q 54.47: Poster

Thursday, March 12, 2020, 16:30–18:30, Empore Lichthof

Wavelength Conversion of Single Photons between the UV and Near-Infrared — •Marcel Hohn and Simon Stellmer — Physikalisches Institut der Universität Bonn, Nussallee 12, 53115 Bonn

The Cluster of Excellence ML4Q (Matter and Light for Quantum Computing), a cooperation between the universities of Cologne, Aachen, Bonn, as well as the Research Center Jülich, aims to develop new computing and networking architectures. Several hardware platforms for quantum computing, such as spin qubits and trapped ions, are investigated in the course of the collaboration. The coupling of these systems via single photons for long-distance quantum information transport allows for the development of a heterogeneous network. The interconnection of distinct platforms additionally requires the conversion of the single photons between the respective wavelengths of the systems while preserving quantum correlations. Here we report on the development of a quantum frequency conversion (QFC) setup between the Yb⁺ dipole transition at 369.5 nm and InGaAs quantum dots at around 850 nm using sum- and difference frequency generation (SFG/DFG) in a periodically poled potassium titanyl phosphate (PPKTP) waveguide structure.