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Berlin 2018 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 34: Carbon: Diamond, nanotubes, Buckyballs

HL 34.4: Talk

Thursday, March 15, 2018, 10:15–10:30, EW 015

Fully integrated quantum photonic circuit with an electroluminescent nanotube light source — •Felix Pyatkov1,2, Svetlana Khasminskaya1, Benjamin Flavel1, Frank Hennrich1, Manfred Kappes1,3, Wolfram Pernice4, and Ralph Krupke1,21Institute of Nanotechnology, Karlsruhe Institute of Technology, Germany — 2Department of Materials and Earth Sciences, Technische Universität Darmstadt, Germany — 3Institute of Physical Chemistry, Karlsruhe Institute of Technology, Germany — 4Institute of Physics, University of Münster, Germany

Optically excited semiconducting carbon nanotubes (CNTs) can serve as quantum emitters operating in the telecommunication wavelength range. From the other side, dielectrophoretically deposited CNTs appear as waveguide-integrated electrically driven light sources [1]. The optical properties of such emitters can be tuned by photonic circuit design [2]. In the presented work we demonstrate non-classical properties of electroluminescent CNTs [3]. The electrically generated light efficiently couples and propagates into waveguide, and is recorded with integrated single photon detectors at cryogenic conditions. Correlation function demonstrates pronounced antibunching, which is a clear signature of non-classical nature of light. Therefore, we realized a CNT-based fully integrated photonic quantum circuit with purely electrical drive. [1] S. Khasminskaya, F. Pyatkov et. al., Advanced Materials 26, 3465 (2014). [2] F. Pyatkov, V. Fütterling et. al., Nature Photonics 10, 420 (2016). [3] S. Khasminskaya, F. Pyatkov et. al., Nature Photonics 10, 727 (2016).

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