English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/97835
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Optimal control of quantum rings by terahertz laser pulses

AuthorsRäsänen, E.; Castro, Alberto; Werschnik, J.; Rubio, Angel; Gross, E. K. U.
Issue DateApr-2007
PublisherAmerican Physical Society
CitationPhysical Review Letters 98: 157404 (2007)
AbstractComplete control of single-electron states in a two-dimensional semiconductor quantum-ring model is established, opening a path into coherent laser-driven single-gate qubits. The control scheme is developed in the framework of optimal-control theory for laser pulses of two-component polarization. In terms of pulse lengths and target-state occupations, the scheme is shown to be superior to conventional control methods that exploit Rabi oscillations generated by uniform circularly polarized pulses. Current-carrying states in a quantum ring can be used to manipulate a two-level subsystem at the ring center. Combining our results, we propose a realistic approach to construct a laser-driven single-gate qubit that has switching times in the terahertz regime.
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevLett.98.157404
URIhttp://hdl.handle.net/10261/97835
DOI10.1103/PhysRevLett.98.157404
ISSN0031-9007
E-ISSN1079-7114
Appears in Collections:(CFM) Artículos
Files in This Item:
File Description SizeFormat 
Optimal Control of Quantum.pdf1,21 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.