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Ultrafast dynamics and optical spin-control in single magnetic quantum dots

Title data

Axt, Vollrath M. ; Reiter, Doris ; Kuhn, Tilmann:
Ultrafast dynamics and optical spin-control in single magnetic quantum dots.
In: Song, Jin-Joo ; Tsen, Kong-Thon ; Betz, Markus ; Elezzabi, Abdulhakem Y. (ed.): Ultrafast phenomena in semiconductors and nanostructure materials XIV. - Bellingham, Wash. : SPIE , 2010 . - Art.Nr. 76000R, 12 S. . - (Proceedings / SPIE, International Society for Optical Engineering ; 7600 )
ISBN 978-0-8194-7996-9
DOI: https://doi.org/10.1117/12.840032

Abstract in another language

An all-optical magnetization switching protocol is presented where the magnetization associated with a single Mn atom embedded in a single CdTe quantum dot is controlled on a picosecond time scale. Even though there is no direct optical coupling to the Mn spin, the control may be achieved by the optical excitation and manipulation of spin-polarized carriers that couple to the Mn spin via the exchange interaction. It is shown that the Mn spin can be selectively driven into each of its spin eigenstates. By suitably chosen pulse sequences also well defined superposition states can be prepared. The Mn spin dynamics is directly reflected in pump probe type signals.

Further data

Item Type: Article in a book
Refereed: No
Keywords: magnetic quantum dot; ultrafast dynamics; excitons; spintronics; exchange interaction; nonlinear optics; coherent control; optical control; spin control; all optical spin control; Mn doped quantum dot; spin switching; quantum superpositions; pump-probe
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III > Chair Theoretical Physics III - Univ.-Prof. Dr. Martin Axt
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Chair Theoretical Physics III
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 06 Nov 2017 13:39
Last Modified: 06 Jun 2019 13:26
URI: https://eref.uni-bayreuth.de/id/eprint/40218