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Título: | Dissipation-driven generation of two-qubit entanglement mediated by plasmonic waveguides |
Autor: | Martín-Cano, Diego; González-Tudela, A. CSIC ORCID; Martín-Moreno, Luis CSIC ORCID ; García-Vidal, F. J.; Tejedor, C.; Moreno, Esteban | Fecha de publicación: | 2011 | Editor: | American Physical Society | Citación: | Physical Review B 84(23): 235306 (2011) | Resumen: | We study the generation of entanglement between two distant qubits mediated by the surface plasmons of a metallic waveguide. We show that a V-shaped channel milled in a flat metallic surface is much more efficient for this purpose than a metallic cylinder. The role of the misalignments of the dipole moments of the qubits, an aspect of great importance for experimental implementations, is also studied. A careful analysis of the quantum dynamics of the system by means of a master equation shows that two-qubit entanglement generation is essentially due to the dissipative part of the effective qubit-qubit coupling provided by the surface plasmons. The influence of a coherent external pumping, needed to achieve a steady-state entanglement, is discussed. Finally, we pay attention to the question of how to get information experimentally on the degree of entanglement achieved in the system. © 2011 American Physical Society. | URI: | http://hdl.handle.net/10261/52601 | DOI: | 10.1103/PhysRevB.84.235306 | Identificadores: | doi: 10.1103/PhysRevB.84.235306 issn: 1098-0121 e-issn: 1550-235X |
Aparece en las colecciones: | (ICMA) Artículos |
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Dissipation-driven generation.pdf | 1,21 MB | Adobe PDF | Visualizar/Abrir |
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