Localization and entanglement of two interacting electrons in a quantum-dot molecule
The localization of two interacting electrons in a coupled-quantum-dots semi-conductor structure is demonstrated through numerical calculations of the time evolution of the two-electron wave function including the Coulomb interaction between the electrons. The transition from the ground state to a l...
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2001
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v53_n6_p776_Tamborenea http://hdl.handle.net/20.500.12110/paper_02955075_v53_n6_p776_Tamborenea |
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paper:paper_02955075_v53_n6_p776_Tamborenea2023-06-08T15:27:08Z Localization and entanglement of two interacting electrons in a quantum-dot molecule Tamborenea, Pablo Ignacio The localization of two interacting electrons in a coupled-quantum-dots semi-conductor structure is demonstrated through numerical calculations of the time evolution of the two-electron wave function including the Coulomb interaction between the electrons. The transition from the ground state to a localized state is induced by an external, time-dependent, uniform electric field. It is found that while an appropriate constant field can localize both electrons in one of the wells, oscillatory fields can induce roughly equal probabilities for both electrons to be localized in either well, generating an interesting type of localized and entangled state. We also show that shifting the field suddenly to an appropriate constant value can maintain in time both types of localization. Fil:Tamborenea, P.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2001 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v53_n6_p776_Tamborenea http://hdl.handle.net/20.500.12110/paper_02955075_v53_n6_p776_Tamborenea |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
The localization of two interacting electrons in a coupled-quantum-dots semi-conductor structure is demonstrated through numerical calculations of the time evolution of the two-electron wave function including the Coulomb interaction between the electrons. The transition from the ground state to a localized state is induced by an external, time-dependent, uniform electric field. It is found that while an appropriate constant field can localize both electrons in one of the wells, oscillatory fields can induce roughly equal probabilities for both electrons to be localized in either well, generating an interesting type of localized and entangled state. We also show that shifting the field suddenly to an appropriate constant value can maintain in time both types of localization. |
| author |
Tamborenea, Pablo Ignacio |
| spellingShingle |
Tamborenea, Pablo Ignacio Localization and entanglement of two interacting electrons in a quantum-dot molecule |
| author_facet |
Tamborenea, Pablo Ignacio |
| author_sort |
Tamborenea, Pablo Ignacio |
| title |
Localization and entanglement of two interacting electrons in a quantum-dot molecule |
| title_short |
Localization and entanglement of two interacting electrons in a quantum-dot molecule |
| title_full |
Localization and entanglement of two interacting electrons in a quantum-dot molecule |
| title_fullStr |
Localization and entanglement of two interacting electrons in a quantum-dot molecule |
| title_full_unstemmed |
Localization and entanglement of two interacting electrons in a quantum-dot molecule |
| title_sort |
localization and entanglement of two interacting electrons in a quantum-dot molecule |
| publishDate |
2001 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_02955075_v53_n6_p776_Tamborenea http://hdl.handle.net/20.500.12110/paper_02955075_v53_n6_p776_Tamborenea |
| work_keys_str_mv |
AT tamboreneapabloignacio localizationandentanglementoftwointeractingelectronsinaquantumdotmolecule |
| _version_ |
1768544501873246208 |