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All-Optical Spin Manipulation of a Single Manganese Atom in a Quantum Dot

Title data

Reiter, Doris ; Kuhn, Tilmann ; Axt, Vollrath M.:
All-Optical Spin Manipulation of a Single Manganese Atom in a Quantum Dot.
In: Physical Review Letters. Vol. 102 (2009) Issue 17 . - Art.Nr. 177403, 4 S..
ISSN 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.102.177403

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

For a CdTe quantum dot doped with a single Mn atom we analyze the dynamics of the Mn spin when the dot is excited by ultrashort laser pulses. Because of the exchange interaction with the Mn atom, electron and hole spins can flip and induce a change of the Mn spin. Including both heavy and light-hole excitons and using suitable pulse sequences, angular momentum can be transferred from the light to the Mn system while the exciton system returns to its ground state. We show that by a series of ultrashort laser pulses the Mn spin can be selectively driven into each of its six possible orientations on a picosecond timescale. By applying a magnetic field the total switching time and the required number of pulses can be strongly reduced.

Further data

Item Type: Article in a journal
Refereed: Yes
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
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 12:46
Last Modified: 30 Oct 2017 12:46
URI: https://eref.uni-bayreuth.de/id/eprint/40209