Article (Scientific journals)
Room-Temperature Inter-Dot Coherent Dynamics in Multilayer Quantum Dot Materials
Collini, Elisabetta; Gattuso, Hugo; Kolodny, Yuval et al.
2020In Journal of Physical Chemistry. C, Nanomaterials and interfaces
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Abstract :
[en] The full blossoming of quantum technologies requires the availability of easy-to-prepare materials where quantum coherences can be effectively initiated, controlled, and exploited, preferably at ambient conditions. Solid-state multilayers of colloidally grown quantum dots (QDs) are highly promising for this task because of the possibility of assembling networks of electronically coupled QDs through the modulation of sizes, inter-dot linkers, and distances. To usefully probe coherence in these materials, the dynamical characterization of their collective quantum mechanically coupled states is needed. Here, we explore by two-dimensional electronic spectroscopy the coherent dynamics of solid-state multilayers of electronically coupled colloidally grown CdSe QDs and complement it by detailed computations. The time evolution of a coherent superposition of states delocalized over more than one QD was captured at ambient conditions. We thus provide important evidence for inter-dot coherences in such solid-state materials, opening up new avenues for the effective application of these materials in quantum technologies.
Research center :
MolSys - Molecular Systems - ULiège
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Collini, Elisabetta
Gattuso, Hugo ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de chimie physique théorique
Kolodny, Yuval
Bolzonello, Luca
Volpato, Andrea
Fridman, Hanna T.
Yochelis, Shira
Mor, Morin
Dehnel, Johanna
Lifshitz, Efrat
Paltiel, Yossi
Levine, Raphael D.
Remacle, Françoise  ;  Université de Liège - ULiège > Département de chimie (sciences) > Laboratoire de chimie physique théorique
More authors (3 more) Less
Language :
English
Title :
Room-Temperature Inter-Dot Coherent Dynamics in Multilayer Quantum Dot Materials
Publication date :
2020
Journal title :
Journal of Physical Chemistry. C, Nanomaterials and interfaces
ISSN :
1932-7447
eISSN :
1932-7455
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
H2020 - 766563 - COPAC - Coherent Optical Parallel Computing
Name of the research project :
MONACOMP
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
CE - Commission Européenne [BE]
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