English: Schematic representation of a possible physical implementation of the qubit. The electrode VG applies the field on the stacking direction, changing the state |ψ(VG)⟩ of the electron in the conduction band, represented by the green Bloch sphere. By inducing a drift in the horizontal direction, the electron wave function will collapse in one of the two electrodes of the isolated portion of the sheets (|A⟩⟨A| or |B⟩⟨B|), with the probability depending on its localization in each sheet. The Zr, Sn, and Se atoms are represented in red, blue, and gray, respectively.
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