“…Emission energies can be tuned by modifying the dot dimensions and/or the dot-barriers band discontinuity. 1 A fine tuning of the exciton/biexciton binding energy can be achieved through a size scalability mechanism or via the application of electro-magnetic fields. 2 Strain induced, electric and magnetic fields can be used to reduce the built-in asymmetries which produce a fine structure splitting ͑FSS͒ in the cascade biexciton/exciton pair, critical for a reliable source of entangled photons.…”
Section: Impact Of Nitrogen Incorporation On Pseudomorphic Site-contrmentioning
'Impact of nitrogen incorporation on pseudomorphic site-controlled quantum dots grown by metalorganic vapor phase epitaxy', Applied Physics Letters, 97(7), pp. 072115. doi: 10.1063/1.3481675
Type of publicationArticle (
“…Emission energies can be tuned by modifying the dot dimensions and/or the dot-barriers band discontinuity. 1 A fine tuning of the exciton/biexciton binding energy can be achieved through a size scalability mechanism or via the application of electro-magnetic fields. 2 Strain induced, electric and magnetic fields can be used to reduce the built-in asymmetries which produce a fine structure splitting ͑FSS͒ in the cascade biexciton/exciton pair, critical for a reliable source of entangled photons.…”
Section: Impact Of Nitrogen Incorporation On Pseudomorphic Site-contrmentioning
'Impact of nitrogen incorporation on pseudomorphic site-controlled quantum dots grown by metalorganic vapor phase epitaxy', Applied Physics Letters, 97(7), pp. 072115. doi: 10.1063/1.3481675
Type of publicationArticle (
“…These include QD stacking, reduction of the growth rate, and interrupted growth to control the effective QD size and shape; and the overgrowth by strain reducing ͑In,Ga͒As and ͑In,Al͒As layers. [4][5][6][7][8] We have recently introduced leveling and rebuilding of InAs QDs on GaAs͑100͒ substrates during molecular beam epitaxy (MBE) of multiple ultrathin GaAs/ InAs overlayers which drastically improves the QD size uniformity and optical properties due to the exchange of InAs between neighboring QDs. 9 Here we report leveling and rebuilding as an effective route for the creation of height controlled columnar ͑In,Ga͒As QDs.…”
“…It is well-known that the emission wavelength is depend on the QD size and smaller QDs emit shorter wavelength [8] due to the confinement size effect. The broader PL spectrum extending to the shorter wavelength observed with the non-processed QDs shown in Fig.…”
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