Eliminating radiative losses in long-range exciton transport
- URL: http://arxiv.org/abs/2201.13442v2
- Date: Thu, 12 May 2022 09:50:10 GMT
- Title: Eliminating radiative losses in long-range exciton transport
- Authors: Scott Davidson, Felix A. Pollock and Erik M. Gauger
- Abstract summary: We show that it is possible to eliminate radiative losses during excitonic energy transport in systems with an intrinsic energy gradient.
tuning a single system parameter leads to efficient and highly robust transport over relatively long distances.
- Score: 0.1473281171535445
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We demonstrate that it is possible to effectively eliminate radiative losses
during excitonic energy transport in systems with an intrinsic energy gradient.
By considering chain-like systems of repeating `unit' cells which can each
consist of multiple sites, we show that tuning a single system parameter (the
intra-unit-cell coupling) leads to efficient and highly robust transport over
relatively long distances. This remarkable transport performance is shown to
originate from a partitioning of the system's eigenstates into
energetically-separated bright and dark subspaces, allowing long range
transport to proceed efficiently through a `dark chain' of eigenstates.
Finally, we discuss the effects of intrinsic dipole moments, which are of
particular relevance to molecular architectures, and demonstrate that
appropriately-aligned dipoles can lead to additional protection against other
(non-radiative) loss processes. Our dimensionless open quantum systems model is
designed to be broadly applicable to a range of experimental platforms.
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