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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 25.9: Talk

Wednesday, March 14, 2018, 12:15–12:30, EW 201

Photon-Number-Resolving Transition Edge Sensors for the Metrology of Quantum-Light Sources — •Marco Schmidt1,2, Martin von Helversen1, Fabian Gericke1, Elisabeth Schlottmann1, Manuel Gschrey1, Peter Schnauber1, Jan-Hindrik Schulze1, André Strittmatter1, Jörn Beyer2, Sven Rodt1, Tobias Heindel1, and Stephan Reitzenstein11Institut für Festkörperphysik, Technische Universität Berlin, 10623 Berlin, Germany — 2Physikalisch-Technische Bundesanstalt, Abbestraße 2-12, 10587 Berlin, Germany

Photon-number-resolving detectors (PNR) allow for direct access to the photon number distribution of nanophotonic light sources and can thus be exploited to explore the photon statistics of semiconductor-based non-classical light sources. In this work, we report on the realization of a stand-alone measurement system with two fiber-coupled transiton edge sensors (TESs) integrated within a compact adiabatic demagnetization refrigerator. The performance of the detector system is analyzed in terms of its detection efficiency, which is determined to be larger than 87 % (850 - 950 nm). As an exemplary application in QD-metrology, we employ this detector to evaluate the photon number distribution of QD-based single- and twin- photon sources [1] based on deterministically fabricated QD microlenses.

[1] T. Heindel et al., Nat. Commun. 8, 14870, (2017)

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