jp9b11153_si_001.pdf (5.16 MB)
Quantum Phenomena in Nanomaterials: Coherent Superpositions of Fine Structure States in CdSe Nanocrystals at Room Temperature
journal contribution
posted on 2019-12-13, 19:28 authored by Elisabetta Collini, Hugo Gattuso, Luca Bolzonello, Andrea Casotto, Andrea Volpato, Carlo Nazareno Dibenedetto, Elisabetta Fanizza, Marinella Striccoli, Françoise RemacleOne of the most recent developments at the forefront
of nanotechnology
is the attempt to exploit quantum phenomena in nanometer scale materials,
exploring novel applications of quantum effects. An effective exploitation
of quantum phenomena must necessarily pass through a deep understanding
of how to generate, manipulate, and characterize coherent superposition
of quantum states in the nanosystems. However, despite the lively
interest in this topic, the study of coherent effects in nanomaterials
still represents relatively unexplored territory. Here we report an
investigation on the ultrafast coherent dynamics of colloidal CdSe
quantum dots (QDs) by the mean of two-dimensional electronic spectroscopy
(2DES). The time evolution of specific coherent superpositions of
fine structure levels in these nanomaterials is clearly demonstrated.
The obtained results represent an important step forward toward a
deeper understanding of quantum properties of nanomaterials.