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SUMMARY:Engineering quantum structures in nanomaterials: functional proper
 ties on demand
DTSTART:20180409T163000
DTEND:20180409T173000
DTSTAMP:20260406T224304Z
UID:d7031a71ee5725d64da9a99cd8fff5088f7f47783889fcb1b623788b
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr Marta De Luca\, University of Basel\nAbstract: Engineerin
 g complex quantum structures in semiconductors has attracted much interest
  in the last decade\, for these structures encode new functionalities and/
 or enhance the performances of existing devices. Nanowires (NWs) offer an 
 ideal platform to embed quantum structures\, such as quantum dots and quan
 tum disks\, because the unique growth environment offered by NWs benefits 
 from a much greater flexibility with respect to conventional planar epitax
 ial growth. So far\, quantum structures in NWs were created by exploiting 
 the possibility to tune the crystal structure and the crystal compositions
 . I will review the most diffused approaches and the technological applica
 tions achieved. I will also present a totally new approach for embedding s
 ite-controlled quantum structures in III-V NWs. The pursued route will inv
 olve mainly post-growth hydrogen incorporation\, thus allowing to achieve 
 different NW properties on demand with no need to change and re-optimize N
 W growth conditions.\n\nIn my research\, the optical properties of quantum
  dots\, quantum wires\, quantum rings\, quantum well tubes\, and quantum d
 isks in NWs will be engineered to obtain characteristics functional to dev
 elop quantum technologies and investigate fundamental quantum mechanical e
 ffects. Quantum rings will be the platform of advanced magneto-optical exp
 eriments to probe for the first time in NWs the quantum mechanical optical
  Aharonov-Bohm effect. Moreover\, QDs-in-NWs with high brightness and high
  light extraction efficiency will be in my research the solid-state buildi
 ng blocks of novel photonic crystals\, photonic circuits\, and quantum sen
 sing devices with tunable properties. The novel generation of solid-state 
 site-controlled single photon emitters proposed here will open new paths i
 n quantum-information processing.
LOCATION:CH G1 495 https://plan.epfl.ch/?room==CH%20G1%20495
STATUS:CONFIRMED
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