Numerical Evidence for Robustness of Environment-Assisted Quantum Transport
arXiv:1405.2623 · doi:10.1103/PhysRevE.89.042706
Abstract
Recent theoretical studies show that decoherence process can enhance transport efficiency in quantum systems. This effect is known as environment-assisted quantum transport (ENAQT). The role of ENAQT in optimal quantum transport is well investigated, however, it is less known how robust ENAQT is with respect to variations in the system or its environment characteristic. Toward answering this question, we simulated excitonic energy transfer in Fenna-Matthews-Olson (FMO) photosynthetic complex. We found that ENAQT is robust with respect to many relevant parameters of environmental interactions and Frenkel-exciton Hamiltonian including reorganization energy, bath frequency cutoff, temperature, and initial excitations, dissipation rate, trapping rate, disorders, and dipole moments orientations. Our study suggests that the ENAQT phenomenon can be exploited in robust design of highly efficient quantum transport systems.
arXiv commentarXiv admin note: substantial text overlap with arXiv:1104.4812
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- Geometry, supertransfer, and optimality in the light harvesting of purple bacteria
- Optimization of energy transport in the Fenna-Matthews-Olson complex via site-varying pigment-protein interactions
- Dephasing-assisted selective incoherent quantum transport
- Dynamics of a Chlorophyll Dimer in Collective and Local Thermal Environments