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Artificial molecule quantum dot cells are a promising currentless nanotechnology, which can be used for realising fully digital circuits and systems. A dual-edge triggered module and flip-flop sequential circuit are proposed using quantum dot cellular automata (QCA) cells by arranging special clock zones subtly and serially. A D flip-flip case is given to show how a low power dual-edge triggered flip-flop...
We describe a scalable nanocavity array, with single quantum dots, for universal single-operation N-qubit quantum gate. A single two-level system controls the lineshapes, departing from optical-analog of electromagnetically-induced-transparency, with high fidelity and low photon loss.
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