Toward flying qubit spectroscopy
Résumé
While the coherent control of two level quantum systems-qubits-is now standard, their continuum electronic equivalents-flying qubits-are much less developed. A first step in this direction has been achieved in DC interferometry experiments. Here, we propose a simple setup to perform the second step, the spectroscopy of these flying qubits, by measuring the DC response to a high frequency AC voltage drive. Using two different concurring approaches-Floquet theory and time-dependent simulations-and three different models-an analytical model, a simple microscopic model and a realistic microscopic model-we predict the power-frequency map of the multi-terminal device. We argue that this spectroscopy provides a direct measurement of the flying qubit characteristic frequencies and a key validation for more advanced quantum manipulations.
Domaines
Matière Condensée [cond-mat]Origine | Fichiers produits par l'(les) auteur(s) |
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