Manipulating the Spin Polarization of Excitons in a Single Quantum Dot by Optical Means
2011 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 98, no 7, 071906- p.Article in journal (Refereed) Published
Circular polarization studies of photoluminescence from the neutral (X0) and the positively charged (X+) exciton are reported for individual InAs/GaAs quantum dots (QDs). High polarization degrees, 60 % for X0 and 73 % for X+, were recorded without any external magnetic field applied. These studies show that that the QD polarization and population dynamics are controllable either by varying the photo-excitation intensity, or by using a second IR laser excitation.
Place, publisher, year, edition, pages
American Institute of Physics , 2011. Vol. 98, no 7, 071906- p.
National CategoryNatural Sciences
IdentifiersURN: urn:nbn:se:liu:diva-64725DOI: 10.1063/1.3554422ISI: 000287507200017OAI: oai:DiVA.org:liu-64725DiVA: diva2:394587
Arvid Larsson, Evgenii Moskalenko and Per-Olof Holtz, Manipulating the Spin Polarization of Excitons in a Single Quantum Dot by Optical Means, 2011, Applied Physics Letters, (98), 7, 071906.
Copyright: American Institute of Physics