Heidelberg 2015 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 31: Poster: Quantum Optics and Photonics II
Q 31.19: Poster
Tuesday, March 24, 2015, 17:00–19:00, C/Foyer
The Schmidt decomposition and entanglement in the context of waveguide quantum electrodynamics — •Christoph Martens1 and Kurt Busch1,2 — 1Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Str. 2A, 12489 Berlin, Germany — 2Humboldt-Universität zu Berlin, Institut für Physik, AG Theoretische Optik & Photonik, Newtonstr. 15, 12489 Berlin, Germany
The combination of low-dimensional waveguiding structures with embedded single emitters emerges as a promising candidate to form a concept of basic building blocks for quantum-information processing networks [1]. On this account, studies of the light-matter interaction in waveguides with embedded emitters on the quantum level are sine quibus non to forge ahead with the realization of quantum-information processing networks. The discipline of physics engaged in these studies is waveguide quantum electrodynamics (WQED).
In this contribution, we show how to link up WQED with the Schmidt decomposition [2] in order to attain a quantitative description of entanglement between single emitters and quantized light in a waveguide. Furthermore, we apply this description to a waveguide with a single, embedded Λ-system and quantify the generation of entanglement between this emitter and a single-photon pulse by scattering processes.
[1] H.J. Kimble, "The quantum internet", Nature 453, 1023 (2008)
[2] C.C. Gerry and P.L. Knight, "Introductory Quantum Optics"
(Cambridge University Press, Cambridge, 2005)