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Título: | Coherent quantum switch driven by optimized laser pulses |
Autor: | Räsänen, E.; Castro, Alberto; Werschnik, J.; Rubio, Angel CSIC ORCID; Gross, E. K. U. | Palabras clave: | Optimal control theory Quantum ring Double quantum dot Qubit |
Fecha de publicación: | 11-oct-2007 | Editor: | Elsevier | Citación: | Physica E: Low-dimensional Systems & Nanostructures 40(5): 1593-1595 (2008) | Resumen: | We present two models of coherent quantum switches constructed from a single-electron quantum ring and a double quantum dot, respectively. The systems are driven by picosecond laser pulses obtained using quantum optimal control theory. The optimized pulses generate electron-current flips in the ring (magnetic switch) and electron transport in the double dot (charge switch) in significantly shorter times and higher accuracies than previously used finite-length continuous waves. This opens applicable paths into coherent single-qubit gates operated by terahertz lasers. | Descripción: | 3 pages, 3 figures.-- PACS nrs.: 78.67.−n; 73.23.Ra; 78.20.Bh.-- El pdf del artículo es la versión pre-print. | Versión del editor: | http://dx.doi.org/10.1016/j.physe.2007.09.181 | URI: | http://hdl.handle.net/10261/8480 | DOI: | 10.1016/j.physe.2007.09.181 | ISSN: | 1386-9477 |
Aparece en las colecciones: | (CFM) Artículos |
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Coherent quantumswitch.pdf | 423,06 kB | Adobe PDF | Visualizar/Abrir |
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