Now showing items 1-11 of 11

  • Associative learning with Y-shaped floating gate transistors operated in memristive modes 

    Maier, P.; Hartmann, F.; Emmerling, M.; Schneider, C.; Kamp, M.; Worschech, L.; Höfling, S. (2017-02-03) - Journal article
    We present Y-shaped three-terminal floating gate transistors with positioned quantum dots (QDs) acting as floating gates. The QDs are precisely positioned in the input terminals and the localized charge controls the ...
  • Charging dynamics of a floating gate transistor with site-controlled quantum dots 

    Maier, P.; Hartmann, F.; Emmerling, M.; Schneider, C.; Höfling, S.; Kamp, M.; Worschech, L. (2014-08-04) - Journal article
    A quantum dot memory based on a GaAs/AlGaAs quantum wire with site-controlled InAs quantum dots was realized by means of molecular beam epitaxy and etching techniques. By sampling of different gate voltage sweeps for the ...
  • Electro optical tuning of Tamm-plasmon exciton-polaritons 

    Gessler, J.; Baumann, V.; Emmerling, M.; Amthor, M.; Winkler, K.; Höfling, S.; Schneider, C.; Kamp, M. (2014-11-03) - Journal article
    We report on electro optical tuning of the emission from GaAs quantum wells resonantly coupled to a Tamm-plasmon mode in a hybrid metal/dielectric structure. The structures were studied via momentum resolved photoluminescence ...
  • Electro-photo-sensitive memristor for neuromorphic and arithmetic computing 

    Maier, P.; Hartmann, F.; Emmerling, M.; Schneider, C.; Kamp, M.; Höfling, S.; Worschech, L. (2016-05-17) - Journal article
    We present optically and electrically tunable conductance modifications of a site-controlled quantum-dot memristor. The conductance of the device is tuned by electron localization on a quantum dot. The control of the ...
  • Experimental and theoretical analysis of Landauer erasure in nanomagnetic switches of different sizes 

    Martini, L.; Pancaldi, M.; Madami, M.; Vavassori, P.; Gubbiotti, G.; Tacchi, S.; Hartmann, F.; Emmerling, M.; Höfling, Sven; Worschech, L.; Carlotti, G. (2015) - Journal article
    Bistable nanomagnetic switches are extensively used in storage media and magnetic memories, associating each logic state to a different equilibrium orientation of the magnetization. Here we consider the issue of the minimum ...
  • Light sensitive memristor with bi-directional and wavelength-dependent conductance control 

    Maier, P.; Hartmann, F.; Rebello Sousa Dias, M.; Emmerling, M.; Schneider, C.; Castelano, L. K.; Kamp, M.; Marques, G. E.; Lopez-Richard, V.; Worschech, L.; Höfling, S. (2016-07-11) - Journal article
    We report the optical control of localized charge on positioned quantum dots in an electro-photo-sensitive memristor. Interband absorption processes in the quantum dot barrier matrix lead to photo-generated electron-hole-pairs ...
  • Memristive operation mode of a site-controlled quantum dot floating gate transistor 

    Maier, P.; Hartmann, F.; Mauder, T.; Emmerling, M.; Schneider, C.; Kamp, M.; Höfling, S.; Worschech, L. (2015-05-18) - Journal article
    We have realized a floating gate transistor based on a GaAs/AlGaAs heterostructure with site-controlled InAs quantum dots. By short-circuiting the source contact with the lateral gates and performing closed voltage sweep ...
  • Mimicking of pulse shape-dependent learning rules with a quantum dot memristor 

    Maier, P.; Hartmann, Fabian; Rebello Sousa Dias, M.; Emmerling, M.; Schneider, C.; Castelano, L. K.; Kamp, M.; Marques, G. E.; Lopez-Richard, V.; Worschech, L.; Höfling, Sven (2016-10-07) - Journal article
    We present the realization of four different learning rules with a quantum dot memristor by tuning the shape, the magnitude, the polarity and the timing of voltage pulses. The memristor displays a large maximum to minimum ...
  • Nanoscale tipping bucket effect in a quantum dot transistor-based counter 

    Hartmann, F.; Maier, P.; Rebello Sousa Dias, M.; Göpfert, S.; Castelano, L. K.; Emmerling, M.; Schneider, C.; Höfling, S.; Kamp, M.; Pershin, Y. V.; Marques, G. E.; Lopez-Richard, V.; Worschech, L. (2017-04-12) - Journal article
    Electronic circuits composed of one or more elements with inherent memory - memristors, memcapacitors and meminductors - offer lower circuit complexity and enhanced functionality for certain computational tasks. Networks ...
  • A polariton condensate in a photonic crystal potential landscape 

    Winkler, K.; Fischer, J.; Schade, A.; Amthor, M.; Dall, R.; Geßler, J.; Emmerling, M.; Ostrovskaya, E.A.; Kamp, M.; Schneider, C.; Höfling, S. (2015-01-30) - Journal article
    The possibility of investigating macroscopic coherent quantum states in polariton condensates and of engineering polariton landscapes in semiconductors has triggered interest in using polaritonic systems to simulate complex ...
  • Polariton condensation in S- and P-flatbands in a two-dimensional Lieb lattice 

    Klembt, S.; Harder, T. H.; Egorov, O. A.; Winkler, K.; Suchomel, H.; Beierlein, J.; Emmerling, M.; Schneider, C.; Höfling, Sven (2017-12-04) - Journal article
    We study the condensation of exciton-polaritons in a two-dimensional Lieb lattice of micropillars. We show selective polariton condensation into the flatbands formed by S and Px,y orbital modes of the micropillars under ...