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Coherent control of a single Mn spin in a quantum dot via optical manipulation of the light hole exciton

Title data

Reiter, Doris ; Kuhn, Tilmann ; Axt, Vollrath M.:
Coherent control of a single Mn spin in a quantum dot via optical manipulation of the light hole exciton.
In: Physical Review B. Vol. 83 (2011) Issue 15 . - Art.Nr. 155322, 8 S..
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.83.155322

Abstract in another language

Due to the strong exchange interaction between a single Mn spin embedded in a single semiconductor quantum dot and the quantum dot exciton, the spin state of the Mn atom can be controlled via optical manipulation of the exciton. When the hole of the exciton is of light hole type, both electron and hole can induce spin flips and thus change the Mn spin. We propose switching protocols to selectively address the Mn spin states. Depending on the polarization of the laser pulses the Mn spin can be switched by different switching schemes into all eigenstates. In contrast to previous studies involving heavy holes, we can find faster and more stable switching sequences. We discuss in detail the absorption spectrum of the lowest light hole exciton transition, which is strongly modified by the presence of the Mn spin. Furthermore, we show that spectrally resolved pump-probe measurements provide a suitable technique to monitor the Mn spin dynamics.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: magnetic quantum dot; ultrafast dynamics; light hole excitons; spintronics; exchange interaction; nonlinear optics; coherent control; optical control; spin control; all optical spin control; Mn doped quantum dot; spin switching; 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: 30 Oct 2017 14:26
Last Modified: 30 Oct 2017 14:26
URI: https://eref.uni-bayreuth.de/id/eprint/40230