New Eriksson publication: Measurements of Capacitive Coupling Within a Quadruple-Quantum-Dot Array

Measurement of the capacitive coupling energy between two double dots from the shift of the polarization line, shown as blue geometric divided cells in a lime green backgroundThe Eriksson group, including first author, grad student Sam Neyens, recently published the paper “Measurements of Capacitive Coupling Within a Quadruple-Quantum-Dot Array” in Physical Review Applied. In it, they present measurements of the capacitive coupling energy and the interdot capacitances in a linear quadruple-quantum-dot array in undoped Si/SiGe. They provide a model for the capacitive coupling energy based on the electrostatics of a network of charge nodes joined by capacitors, which shows how the coupling energy should depend on inter-double-dot and intra-double-dot capacitances in the network, and find that the expected trends agree well with the measurements of coupling energy.

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