Berlin 2018 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 25: Focussed Session: Quantum Nanophotonics in Solid State Systems: Status, Challenges and Perspectives II (joint session HL/TT)

HL 25.10: Talk

Wednesday, March 14, 2018, 12:30–12:45, EW 201

Hong-Ou-Mandel Experiment using Single-Photon Fock-States and Photon-Number Resolving Detectors — •Martin von Helversen¹, Jonas Böhm¹, Marco Schmidt^1,2, Jan-Hindrik Schulze¹, André Strittmatter¹, Sven Rodt¹, Jörn Beyer², Tobias Heindel¹, and Stephan Reitzenstein¹ — ¹Institut für Festkörperphysik, Technische Universität Berlin, Hardenbergstraße 36, 10623 Berlin, Germany — ²Physikalisch-Technische Bundesanstalt, Abbestraße 2-12, 10587 Berlin, Germany

Quantum light sources based on semiconductor quantum dots (QDs) are promising candidates for many applications in the research fields of quantum metrology and quantum communication. Important characteristics of such emitters, e.g. the degree of single-photon purity and photon indistinguishability, are typically assessed via time-correlated measurements using silicon-based click detectors in Hanbury-Brown and Twiss (HBT-) and Hong-Ou-Mandel (HOM-) type configuration. Here, we employ a state of the art photon-number-resolving detection system based on two transition edge sensors (TES) to analyze the emission of a deterministically fabricated QD-based single-photon source and quantitatively compare our results with experimental data obtained for standard click detectors. Our results demonstrate that photon-number resolving detectors are very attractive tools for the metrology of quantum light sources.