EnglishElectron interferometers based on Hall edge states (ESs) proved to be robust demonstrators of the coherent quantum dynamics of carriers. Several proposals to expose their capability to build and control quantum entanglement and to exploit them as building block for quantum computing devices has been presented. Here, we review the time-dependent numerical modeling of Hall interferometers operating at the single-carrier level at integer filling factor (FF). By defining the qubit state either as the spatial localization (at FF 1) or the Landau index (at FF 2) of a single carrier propagating in the ES, we show how a generic one-qubit rotation can be realized. By a proper design of the two-dimensional electron gas potential landscape, an entangling two-qubit gate can be implemented by exploiting Coulomb interaction, thus realizing a universal set of quantum gates. We also assess how the shape of the edge confining potential affects the visibility of the quantum transformations.
Quantum computing with quantum-Hall edge state interferometry / Bordone, Paolo; Bellentani, Laura; Bertoni, Andrea. - In: SEMICONDUCTOR SCIENCE AND TECHNOLOGY. - ISSN 1361-6641. - 34(2019), pp. 103001-1-103001-27. [10.1088/1361-6641/ab3be6]
| Data di pubblicazione: | 2019 | |
| Data di prima pubblicazione: | 16-set-2019 | |
| Titolo: | Quantum computing with quantum-Hall edge state interferometry | |
| Autore/i: | Bordone, Paolo; Bellentani, Laura; Bertoni, Andrea | |
| Autore/i UNIMORE: | ||
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1088/1361-6641/ab3be6 | |
| Rivista: | ||
| Volume: | 34 | |
| Pagina iniziale: | 103001-1 | |
| Pagina finale: | 103001-27 | |
| Codice identificativo ISI: | WOS:000486367900001 | |
| Codice identificativo Scopus: | 2-s2.0-85073256832 | |
| Citazione: | Quantum computing with quantum-Hall edge state interferometry / Bordone, Paolo; Bellentani, Laura; Bertoni, Andrea. - In: SEMICONDUCTOR SCIENCE AND TECHNOLOGY. - ISSN 1361-6641. - 34(2019), pp. 103001-1-103001-27. [10.1088/1361-6641/ab3be6] | |
| Tipologia | Articolo su rivista |
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|---|---|---|---|
| Bordone_2019_Semicond._Sci._Technol._34_103001.pdf | Versione dell'editore (versione pubblicata) | Open Access Visualizza/Apri |
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