"Non-classical frequency combs and spectral processing for quantum networks" by Michael Kues
In this QUBITS Seminar, Professor Michael Kues (Leibniz University Hannover) will present cutting-edge work on integrated quantum photonics, including quantum frequency combs and spectral processing circuits—key technologies for scalable quantum networks.
Info about event
Time
Location
1532-122 Aud. G2
Organizer
QUBITS format
45-minute talk followed by refreshments and informal discussions.
About the talk
Today’s quantum technology relies on the realization of large-scale non-classical systems in practical network-compatible formats to enable quantum resource sharing, secure communications and distributed quantum-accelerated computing. Optical quantum frequency combs, characterized by many equidistantly spaced frequency modes, allow the storage of large amounts of quantum information and together with telecom-compatible control mechanisms can provide practical large-scale quantum systems for the realization of scalable quantum networks.
In this presentation, I show the fully laser-integrated generation of quantum frequency combs and the realization of practical coherent quantum frequency processing circuits. I will discuss the advantages of the frequency-based processing capability and show two application examples; the realization of a Serrodyne transceiver for hybrid quantum-classical signal transmission and, the demonstration of entanglement-based frequency-bin quantum key distribution with massively reduced hardware use and multiplexing capabilities. These results contribute to realizing the complexity-reduced, scalable deployment of large-scale quantum networks.
About the speaker
Michael Kues is University Professor at the Institute of Photonics at the Leibniz University Hannover, Germany, heading the research group “Photonic Quantum Technologies”. He received his Diploma and Ph.D. in Physics in 2009 and 2013, from the University of Münster, Germany. From 2014 he led as a post-doc the integrated quantum optics research lab at the National Scientific Research Institute – Energy, Materials, and Telecommunications (INRS-EMT) in Montréal, Canada. In 2018 he joined for one year the photonic chip fabrication lab at the University of Glasgow, UK, and became Assistant Professor at Aarhus University, Denmark. He received among others a Marie Skłodowska–Curie Individual fellowship, and was awarded a BMBF-Junior-Research-Group and ERC Starting Grant from the European Research Council. He is a board member of the Cluster of Excellence PhoenixD and is in the scientific directorate at the Laser Zentrum Hannover.
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