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Controlling the capture dynamics of traveling wave packets into a quantum dot

Title data

Reiter, Doris ; Glanemann, Markus ; Axt, Vollrath M. ; Kuhn, Tilmann:
Controlling the capture dynamics of traveling wave packets into a quantum dot.
In: Physical Review B. Vol. 73 (2006) Issue 12 . - No. 125334, 10 Seiten.
ISSN 0163-1829
DOI: https://doi.org/10.1103/PhysRevB.73.125334

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

An analysis of the control of capture processes from a traveling wave packet in a semiconductor quantum wire into localized states of a quantum dot is presented. On ultrafast time scales this capture in general leads to occupations of the discrete states as well as to coherences among these states. We show that both occupations and coherences can be efficiently controlled by excitation with a pair of spatially localized laser pulses which are spatially, temporally, or spectrally displaced with respect to each other. The coherences between discrete dot states are controlled by spatially nonoverlapping pulses by varying either their spatial or their temporal displacement. For spatially overlapping pulses an effective pulse shaping occurs which modifies both occupations and coherences. By using two-color laser pulses the dot states can be selectively addressed which may result in particularly pronounced coherences.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: quantum dot; quantum wire; quantum kinetics; wave packet transport; carrier capture; phonon induced capture; LO phonons; coherent control; two-color laser pulses; laser induced control
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: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 24 Oct 2017 09:17
Last Modified: 30 Oct 2017 10:08
URI: https://eref.uni-bayreuth.de/id/eprint/40148