2012
DOI: 10.1002/pssb.201100772
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Epitaxial growth of lateral quantum dot molecules

Abstract: We present an overview and a comparison between three different methods of creating low density lateral In(Ga)As quantum dot molecules (QDMs) embedded in a GaAs matrix. Each of them is based on the use of nanoholes to control the dot nucleation site and generate the QDMs. The three methods used to create suitable nanoholes are: (1) In situ excess gallium droplet etching, where the nanohole shape is modified by overgrowth of a thin GaAs buffer to give QDM nucleation. (2) Ex situ electronbeam lithographic patter… Show more

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Cited by 16 publications
(9 citation statements)
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“…As a versatile growth method, DE could find application in creating novel three‐dimensional nanostructures for future electronic and optoelectronic devices. Among these nanostructures, QD molecules (QDMs) have received much attention due to their potential applications in quantum computing 5. The simplest and most investigated QDM is coupled QDs 6.…”
Section: Introductionmentioning
confidence: 99%
“…As a versatile growth method, DE could find application in creating novel three‐dimensional nanostructures for future electronic and optoelectronic devices. Among these nanostructures, QD molecules (QDMs) have received much attention due to their potential applications in quantum computing 5. The simplest and most investigated QDM is coupled QDs 6.…”
Section: Introductionmentioning
confidence: 99%
“…This technique leads to highly uniform [16] and isotropic GaAs QDs [17] showing very small bright-bright exciton splitting [18]. This nanohole-infilling approach can also be associated with nanopatterned substrate to control the QDs position and realize QDs arrays [19,20]. Moreover, in these filled nanohole QDs, very recent studies have evidenced the opportunity to observe DE states [21,22] to control the DE decay rate and heavy-hole (HH)-light-hole (LH) mixing via strain or electric field [23].…”
Section: Introductionmentioning
confidence: 99%
“…39,40 Just recently, the ICD rate equation was also confirmed in electron dynamics calculation in two-electron systems with a two-dimensional electronic continuum. 48,51 The respective potentials correspond to laterally-arranged self-assembled [52][53][54] or electrostatically confined QDs. 55 There, the dynamics rates showed much less pronounced oscillations with parameter variations in comparison to the analytical monotonic rate as function of the respective parameter, where the parameter considered so far was the inter-QD distance.…”
Section: Introductionmentioning
confidence: 99%