Browsing by Subject "Coulomb blockade"

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  • Channel blockade in a two-path triple-quantum-dot system 
    Kotzian, M.; Gallego-Marcos, F.; Platero, G.; Haug, Rolf J. (College Park, MD : American Physical Society, 2016)
    Electronic transport through a two-path triple-quantum-dot system with two source leads and one drain is studied and the interaction between the two paths is analyzed. We observe a channel blockade as a result of interchannel ...
  • Charge reconfiguration in arrays of quantum dots 
    Bayer, Johannes C.; Wagner, Timo; Rugeramigabo, Eddy P.; Haug, Rolf J. (College Park, MD : American Physical Society, 2017)
    Semiconductor quantum dots are potential building blocks for scalable qubit architectures. Efficient control over the exchange interaction and the possibility of coherently manipulating electron states are essential ...
  • Electron transport through and in quantum dot arrays 
    Bayer, Johannes Christian (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2024)
    The present thesis investigates serial quantum dot arrays of different sizes, the double quantum dot, the triple quantum dot, and the quadruple quantum dot. The quantum dot device is based on a two-dimensional electron gas ...
  • Photoneutralization of charges in GaAs quantum dot based entangled photon emitters 
    Yang, Jingzhong; Fandrich, Tom; Benthin, Frederik; Keil, Robert; Sharma, Nand Lal; Nie, Weijie; Hopfmann, Caspar; Schmidt, Oliver G.; Zopf, Michael; Ding, Fei (College Park, MD : American Physical Society, 2022-03-03)
    Semiconductor-based emitters of pairwise photonic entanglement are a promising constituent of photonic quantum technologies. They are known for the ability to generate discrete photonic states on-demand with low multiphoton ...
  • Probing spin configurations in quantum dots 
    Rogge, M.C.; Fühner, C.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2007)
    We study the magnetoconductance of lateral quantum dots in high magnetic fields. We use spin blockade and Kondo effect to investigate the spin configuration and the spin filling mechanism and find a dependence on the ...
  • Quantum dot device tunable from single to triple dot system 
    Rogge, M.C.; Pierz, Klaus; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2013)
    We present a lateral quantum dot device which has a tunable number of quantum dots. Depending on easily tunable gate voltages, one, two or three quantum dots are found. They are investigated in transport and charge detection. ...
  • Quantum dots formed in a GaAsAlGaAs quantum ring 
    Mühle, A.; Wegscheider, W.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2008)
    We demonstrate the tunability of a GaAsAlGaAs quantum ring showing coherent Aharonov-Bohm oscillations up to a gate voltage regime where the ring splits into three quantum dots. This is explained based on the structure's ...
  • Spin droplet formation in quantum dots 
    Rogge, M.C.; Räsänen, E.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2011)
    A lateral quantum dot with approx. 50 electrons is analyzed in high perpendicular magnetic fields. In a regime with two Landau levels (LL) in the quantum dot information about the spin structure is gained by investigating ...
  • Two-path transport measurements with bias dependence on a triple quantum dot 
    Kotzian, M.; Rogge, M.C.; Haug, Rolf J. (College Park, MD : American Institute of Physics, 2013)
    We present transport measurements on a lateral triple quantum dot with a star-like geometry and one lead attached to each dot. [1] The system is studied in a regime close to established quadruple points, where all three ...