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Proceedings Paper

Ultrafast dynamics and optical spin-control in single magnetic quantum dots
Author(s): Vollrath Martin Axt; Doris E. Reiter; Tilmann Kuhn
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Paper Abstract

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.

Paper Details

Date Published: 2 March 2010
PDF: 12 pages
Proc. SPIE 7600, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV, 76000R (2 March 2010); doi: 10.1117/12.840032
Show Author Affiliations
Vollrath Martin Axt, Univ. Bayreuth (Germany)
Doris E. Reiter, Westfälische Wilhelms-Univ. Münster (Germany)
Tilmann Kuhn, Westfälische Wilhelms-Univ. Münster (Germany)


Published in SPIE Proceedings Vol. 7600:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV
Jin-Joo Song; Kong-Thon Tsen; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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