14 citations · 24 across the 10 of their papers we have counts for
10 papers
Characterizing the functional role of quantum coherence in energy transfer
Hallmann Óskar Gestsson, Alexandra Olaya-Castro
Quantum coherence has been suggested to play a role in excitation energy transfer in open quantum systems, yet a quantitative approach to assessing its influence on the transfer pr…
Signatures of coherent energy transfer and exciton delocalization in time-resolved optical cross correlations
Hallmann Óskar Gestsson, Alexandra Olaya-Castro
We investigate how optical second-order cross correlations witness the quantum features of a prototype donor-acceptor light-harvesting unit. By considering a pair of detuned two-le…
Non-perturbative exciton transfer rate analysis of the Fenna-Matthews-Olson photosynthetic complex under reduced and oxidised conditions
Hallmann Ó. Gestsson, Charlie Nation, Jacob S. Higgins +2
Two-dimensional optical spectroscopy experiments have shown that exciton transfer pathways in the Fenna-Matthews-Olson (FMO) photosynthetic complex differ drastically under reduced…
Perturbation-theory approach for predicting vibronic selectivity by entangled-photon-pair absorption
C. D. Rodriguez-Camargo, H. O. Gestsson, C. Nation +2
Using second-order perturbation theory in the light-matter interaction, we derive an analytical approximation for the vibronic populations of a diatomic system excited by ultrabroa…
Theoretical study of the influence of the photosynthetic membrane on B800-B850 energy transfer within the peripheral light-harvesting complex LH2
Chawntell Kulkarni, Hallmann Óskar Gestsson, Lorenzo Cupellini +2
Photosynthetic organisms rely on a network of light-harvesting protein-pigment complexes to efficiently absorb sunlight and transfer excitation energy to reaction center proteins f…
Equivalence of dynamics of disordered quantum ensembles and semi-infinite lattices
Hallmann Óskar Gestsson, Charlie Nation, Alexandra Olaya-Castro
We develop a formalism for mapping the exact dynamics of an ensemble of disordered quantum systems onto the dynamics of a single particle propagating along a semi-infinite lattice,…
Anisotropic transport properties in prismatic topological insulator nanowires
Hallmann Oskar Gestsson, Andrei Manolescu, Jens H. Bardarson +1
The surface of a three dimensional topological insulator (TI) hosts surface states whose properties are determined by a Dirac-like equation. The electronic system on the surface of…
Photon correlation time-asymmetry and dynamical coherence in multichromophoric systems
Charlie Nation, Hallmann Oskar Gestsson, Alexandra Olaya-Castro
We theoretically investigate polarization-filtered two-photon correlations for the light emitted by a multichromophoric system undergoing excitation transport under realistic excit…
Two-colour photon correlations probe coherent vibronic contributions to electronic excitation transport under incoherent illumination
Charlie Nation, Valentina Notararigo, Hallmann Oskar Gestsson +2
Identifying signatures of quantum coherent behaviour in photoactive systems that are maintained in stationary states away from thermal equilibrium is an open problem of wide intere…
Coexisting spin and Rabi-oscillations at intermediate time in electron transport through a photon cavity
Vidar Gudmundsson, Hallmann Gestsson, Nzar Rauf Abdullah +3
We model theoretically the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a FIR photon cavity. For the transient and…