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Integrated photonic quantum walks

: Gräfe, M.; Szameit, A.


Journal of Physics. B, Atomic, molecular and optical physics 53 (2020), No.7, Art. 073001, 20 pp.
ISSN: 0022-3700
ISSN: 0953-4075
ISSN: 1361-6455
Journal Article
Fraunhofer IOF ()
quantum walk; coin operated equipment; evolution operator; integrated photonics; non-classical correlations

Quantum walks (QWs) are one of the fundamental concepts in quantum information science, being an essential component for various new applications. Implementing QWs using integrated photonic waveguide lattices allows for realizing long evolution times, for exploring novel lattice geometries, and even for controllable coupling to the environment. This tutorial gives an introduction to the field of on-chip QWs of single photons and photon pairs featuring non-classical two-photon correlations.