TRR 142 - Three-photon state generation with on-chip pump suppression in topological waveguides (A09*)


In this project, we experimentally and theoretically study a degenerate four-wave mixing source for the generation of three-photon states, where the photons are generated inside the topological mode and propagate away from the interaction region. The design using topological protected surface modes intrinsically provides a strong suppression of the generally bright pump light, which is one of the outstanding challenges for miniaturized quantum optics circuits. The structures will have a size of a few tenths of an optical wavelength, thus holding the promise of an increase in component density beyond what is imaginable with the tools of conventional integrated optics.

Key Facts

Research profile area:
Optoelectronics and Photonics
Project type:
Project duration:
01/2022 - 12/2025
Funded by:

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Principal Investigators

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Dr. Benjamin Brecht

Integrated Quantum Optics

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Prof. Dr. Thomas Zentgraf

Ultrafast Nanophotonics

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