Dynamics of quantum cellular automata electron transition in triple quantum dots
arxiv(2024)
摘要
The quantum cellular automata (QCA) effect is a transition in which multiple
electron move coordinately by Coulomb interactions and observed in multiple
quantum dots. This effect will be useful for realizing and improving quantum
cellular automata and information transfer using multiple electron transfer. In
this paper, we investigate the real-time dynamics of the QCA charge transitions
in a triple quantum dot by using fast charge-state readout realized by rf
reflectometry. We observe real-time charge transitions and analyze the
tunneling rate comparing with the first-order tunneling processes. We also
measure the gate voltage dependence of the QCA transition and show that it can
be controlled by the voltage.
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