Integrated photonic quantum frequency combs and applications
24 January 2022 • 4:40 PM - 5:20 PM PST | Room 207/215 (Level 2 South)
Today’s quantum technology relies on the realization of large-scale non-classical systems in practical formats to enable quantum-accelerated computing, secure communications and enhanced sensing. Optical on-chip quantum frequency combs, characterized by many equidistantly spaced frequency modes, allow the storage of large amounts of quantum information. The combination with control techniques, using accessible state-of-the-art telecommunications infrastructure, can constitute a powerful frequency-domain quantum circuit with new functionalities and represents an approach towards realizing practical large-scale controllable quantum systems. In this presentation, we will review approaches for the efficient realization of quantum frequency combs in on-chip waveguide structures and micro-resonators. We will show their applicability for the realization of quantum systems with considerably enhanced complexity, particularly generating and manipulating on-chip multi-photon and high-dimensional quantum states as well as discrete high-dimensional cluster states, laying at the basis of measurement based-quantum computing. Building on this, the realization of frequency-domain Hong-Ou-Mandel interference of independent photons, fundamental to quantum information processing, as well as an outlook on frequency-domain circuits will be discussed.
Leibniz Univ. Hannover (Germany)
Michael Kues is a 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 (Prof. Morandotti) 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 an ERC Starting Grant from the European Research Council.