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Q: Fachverband Quantenoptik und Photonik
Q 37: Poster III
Q 37.47: Poster
Mittwoch, 13. März 2024, 17:00–19:00, Tent B
From Nonlinear Frequency Conversion towards Quantum Frequency Conversion — Anica Hamer1, •Priyanka Yashwantrao1, Alireza Aghababaei1, Frank Vewinger2, and Simon Stellmer1 — 1Physikalisches Institut, Nussallee 12, Universität Bonn, 53115 Bonn, Germany — 2Institut für Angewandte Physik, Wegelerstraße 8, Universität Bonn
Quantum networks, as envisioned for quantum computation and quantum communication applications, are often based on a hybrid architecture. Such a layout may include solid-state emitters, network nodes based on single or few atoms or ions, and photons as so-called flying qubits. This approach requires an efficient and entanglement-preserving exchange of photons between the individual components and so involves frequency conversion of the photon.
We have established two different platforms to convert individual photons between wavelengths that are relevant for qubit platforms.
The first platform is based on nonlinear crystals and converts photons from 853 nm (InAs/GaAs QDs) to 370 nm (Yb+ ions).
The second platform is based on CSRS and CARS in dense molecular hydrogen gas. We have demonstrated conversion between 434 nm (F donors in ZnSe) to 370nm (Yb+ ions) and between 863 nm (InAs/GaAs QDs) and the telecom O-band. We will present first steps towards integrated frequency conversion in gas-filled hollow-core fibers.
Keywords: Frequency Conversion; Quantum Dots; Quantum Connection; Qubits