Figure 5

Levitons qubits. (a) Time trace of a Lorentzian voltage pulse that is suitable for excitation of Levitons. (b) Excitation spectrum corresponding to this Lorentzian pulse showing the collective excitation of the single-electron wave function without perturbation of the Fermi sea. (c) Scanning electron micrograph showing a quantum interferometer with the two tunnel-coupled wires enclosing the island with schematic indication of the transportation paths of the Levitons