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Numerical evidence for robustness of environment-assisted quantum transport

Author(s)
Shabani, A.; Mohseni, Masoud; Rabitz, H.; Lloyd, Seth
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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 photosynthetic complex. We found that ENAQT is robust with respect to many relevant parameters of environmental interactions and Frenkel-exciton Hamiltonians, including reorganization energy, bath-frequency cutoff, temperature, 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.
Date issued
2014-04
URI
http://hdl.handle.net/1721.1/89154
Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Journal
Physical Review E
Publisher
American Physical Society
Citation
Shabani, A., M. Mohseni, H. Rabitz, and S. Lloyd. “Numerical Evidence for Robustness of Environment-Assisted Quantum Transport.” Phys. Rev. E 89, no. 4 (April 2014). © 2014 American Physical Society.
Version: Final published version
ISSN
1539-3755
1550-2376

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