Real Space Visualization of Entangled Excitonic States in Charged Molecular Assemblies.

  title={Real Space Visualization of Entangled Excitonic States in Charged Molecular Assemblies.},
  author={Jiř{\'i} Dole{\vz}al and Sofia Canola and Prokop Hapala and Rodrigo Cezar de Campos Ferreira and Pablo Merino and Martin {\vS}vec},
  journal={ACS nano},
Entanglement of excitons holds great promise for the future of quantum computing, which would use individual molecular dyes as building blocks of their circuitry. Studying entangled excitonic eigenstates emerging in coupled molecular assemblies in the near-field with submolecular resolution has the potential to bring insight into the photophysics of these fascinating quantum phenomena. In contrast to far-field spectroscopies, near-field spectroscopic mapping permits direct identification of the… 
1 Citations
From single-molecule fluorescence to photosynthesis with an STM
s of Lectures (in alphabetical order) Addressing photonics at the atomic scale


Near-Field Spectroscopy of Nanoscale Molecular Aggregates.
This work demonstrates that by using localized fields one can obtain information about these otherwise inaccessible states of electronic eigenstates of the semiconductor PTCDA formed on a KCl surface by using spatially resolved spectra.
Visualizing coherent intermolecular dipole–dipole coupling in real space
The experimental approach provides detailed spatial information about coherent dipole–dipole coupling in molecular systems, which should enable a greater understanding and rational engineering of light-harvesting structures and quantum light sources.
Real-space investigation of energy transfer in heterogeneous molecular dimers
Scanning tunnelling luminescence spectroscopy is applied to individual molecular dimers and shows that tautomerization of H2Pc changes the energy transfer characteristics within the dimer system, which essentially makes H1Pc a single-molecule energy transfer valve device that manifests itself by blinking resonance energy transfer behaviour.
Mechano-Optical Switching of a Single Molecule with Doublet Emission.
It is demonstrated that the excitonic state of a single CuPc molecule can be reproducibly switched by atomic scale manipulations permitting precise positioning of the molecule on the NaCl ionic crystal lattice.
Exciton-Trion Conversion Dynamics in a Single Molecule.
The dependence of effective lifetimes on bias voltage is explored and the conversion mechanism from neutral excitons to trions, via charge capture, is described as the primary pathway to trion formation.
Single organic molecules for photonic quantum technologies
It is shown that quantum emitters based on single molecules hold promise to play a key role in the development of quantum science and technologies and in single-molecule sensing and quantum-sensing applications.
Atomically resolved single-molecule triplet quenching
The authors show how the triplet-state lifetime can be quenched in controllable manner by atomic-scale manipulations with oxygen co-adsorbed in close vicinity and paves the way for further atomically resolved studies of triplet excited states that play an important role in many other fields, such as organic electronics, photocatalysis, and photodynamic therapy.
Interlayer charge transport controlled by exciton–trion coherent coupling
The possibility of electrical manipulation and detection of a charged exciton (trion) before its radiative recombination makes it promising for excitonic devices. Using a few-layer graphene/monolayer
Electrically Driven Single-Photon Superradiance from Molecular Chains in a Plasmonic Nanocavity.
The combination of spatially resolved spectral measurements with theoretical considerations reveals that nanocavity plasmons dramatically modify the linewidth and intensity of emission from the molecular chains, but they do not dictate the intrinsic coherence of the superradiant states.
Pronounced polarization-induced energy level shifts at boundaries of organic semiconductor nanostructures
Low temperature scanning tunneling microscopy and spectroscopy is employed to investigate a model system, revealing strong electronic differences between molecules at the edges and those in the centre, with energy level shifts of up to 400 meV, which illustrates a crucial issue: interfacial energy level alignment can differ substantially from the bulk electronic structure in organic materials.