Szczegóły publikacji
Opis bibliograficzny
Long-distance entanglement of soliton spin qubits in gated nanowires / Paweł SZUMNIAK, Jarosław PAWŁOWSKI, Stanisław BEDNAREK, Daniel Loss // Physical Review. B, Condensed Matter and Materials Physics ; ISSN 1098-0121. — Tytuł poprz.: Physical Review B : Condensed Matter. — 2015 — vol. 92 iss. 3, s. 035403-1–035403-6. — Bibliogr. s. 035403-5–035403-6. — Publikacja dostępna online od: 2015-07-02. — Paweł Szumniak – dod. afiliacja: University of Basel
Autorzy (4)
Dane bibliometryczne
| ID BaDAP | 95424 |
|---|---|
| Data dodania do BaDAP | 2016-02-10 |
| Tekst źródłowy | URL |
| DOI | 10.1103/PhysRevB.92.035403 |
| Rok publikacji | 2015 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Physical Review, B |
Abstract
We investigate numerically the charge, spin, and entanglement dynamics of two electrons confined in a gated semiconductor nanowire. The electrostatic coupling between electrons in the nanowire and the induced charge on the metal electrodes leads to a self-trapping of the electrons, which results in solitonlike properties. We show that the interplay of an all-electrically controlled coherent transport of the electron solitons and of the exchange interaction can be used to realize ultrafast SWAP and entangling root SWAP gates for distant spin qubits. We demonstrate that the latter gate can be used to generate a maximally entangled spin state of spatially separated electrons. The results are obtained by quantum-mechanical time-dependent calculations with exact inclusion of electron-electron correlations.